Transcatheter therapy of mitral regurgitation.

Herrmann HC From the Hospital of the University of Pennsylvania and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA (H.C.H.); and the Department of Cardiovascular Surgery, University Hospital Zurich, Zurich, Switzerland (F.M.). howard.herrmann@uphs.upenn.edu.
Maisano F From the Hospital of the University of Pennsylvania and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA (H.C.H.); and the Department of Cardiovascular Surgery, University Hospital Zurich, Zurich, Switzerland (F.M.).