| Affiliation: | 1. Division of Digestive and Liver Diseases, Department of Medicine, Columbia University Medical Center, New York 10032, NY, USA;1. Unidad de Virología, Servicio de Microbiología, Hospital Universitario Son Espases, Palma de Mallorca, Spain;2. Facultad de Medicina, Universitat de Girona, Girona, Spain;1. Shenandoah Family Practice Residency, Department of Family Medicine and Population Health, School of Medicine, Virginia Commonwealth University, Front Royal, Virginia;2. Department of Family Medicine, Franklin Square Hospital Center, Baltimore, Maryland;3. Department of Biostatistics and Department of Family Medicine and Population Health, School of Medicine, Virginia Commonwealth University, Richmond, Virginia |
