Hepatitis, Viral, Human

• Gastroenterology department, Second clinic of internal diseases — Sofia, Bulgaria
• COMAC Medical; Clinical Research Unit for Phase I — Sofia, Bulgaria
• Queen Mary Hospital — Hong Kong
• The Chinese University of Hong Kong — Shatin, Hong Kong

• Lindner Research Center at the Christ hospital — Cincinnati, Ohio, United States

• Family Health Centers of San Diego — San Diego, California, United States

• Cool Aid Community Health Centre — Victoria, British Columbia, Canada

• University of Alabama - Birmingham — Birmingham, Alabama, United States
• Stanford University — Stanford, California, United States
• University of Colorado — Denver, Colorado, United States
• Northwestern University — Chicago, Illinois, United States

• Centre de soin d'accompagnement et de prevention en addictologie- CHU Archet 2 /ID# 218682 — Nice, Alpes-Maritimes, France
• Centre de Soins d'Accompagnement et de Prevention en Addictologie-Tempo Oppelia /ID# 218701 — Valence, Drome, France
• CSAPA Bagnols sur ceze /ID# 233397 — Bagnols-sur-Cèze, Gard, France
• Centre de soin d'accompagnement et de prevention en addictologie- L'ENVOL /ID# 218680 — Nîmes, Gard, France

• Nepean Hospital — Sydney, New South Wales, Australia
• St Vincents Hospital — Sydney, New South Wales, Australia
• Western Hospital — Footscray, Victoria, Australia
• Royal Melbourne Hospital — Melbourne, Victoria, Australia

Not specified

• Johns Hopkins Hospital — Baltimore, Maryland, United States

• UC Davis Medical Center — Sacramento, California, United States