1. Department of Hepatology; Imperial College London; St Mary's Hospital; London UK
2. Department of Gastroenterology; Muhimbili National Hospital; Dar es Salaam Tanzania
3. Unité d'Épidémiologie des Maladies Émergentes; Institut Pasteur; Paris France
4. Department of Virology; French National Reference Center for Viral Hepatitis B, C and Delta; Hopital Henri Mondor; Université Paris-Est; Créteil France
5. The Royal Free Hospital; London UK
6. Department of Psychiatry; Muhimbili University of Health and Allied Sciences; Muhimbili National Hospital; Dar es Salaam Tanzania