Definition and Reliability Assessment of Elementary Ultrasonographic Findings in Calcium Pyrophosphate Deposition Disease: A Study by the OMERACT Calcium Pyrophosphate Deposition Disease Ultrasound Subtask Force.

• Filippou G From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland. gf.filippou@gmail.com.
• Scirè CA From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Damjanov N From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Adinolfi A From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Carrara G From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Picerno V From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Toscano C From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Bruyn GA From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• D'Agostino MA From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Delle Sedie A From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Filippucci E From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Gutierrez M From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Micu M From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Möller I From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Naredo E From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Pineda C From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Porta F From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Schmidt WA From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Terslev L From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Vlad V From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Zufferey P From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.
• Iagnocco A From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.

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CHONDROCALCINOSIS

KNEE OSTEOARTHRITIS

OSTEOARTHRITIS

ULTRASONOGRAPHY

Chondrocalcinosis

Delphi Technique

Humans

Hyaline Cartilage

Knee Joint

Reproducibility of Results

Synovial Fluid

Tendons

Ultrasonography

Wrist Joint