Response to Calcagno comment on

Response to Calcagno comment on "Higher CNS penetration-effectiveness of long-term combination antiretroviral therapy is associated with better HIV-1 viral suppression in cerebrospinal fluid".

Cusini A *Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland †Department of Infectious Diseases, University Hospital Bern, Bern, Switzerland ‡Division of Clinical Pharmacology, University Hospital Centre and University of Lausanne, Lausanne, Switzerland.
Ledergerber B
Widmer N
Günthard HF