1. HIV Unit; Geneva University Hospitals; Geneva Switzerland
2. Transplant Infectious Diseases Unit; Geneva University Hospitals; Geneva Switzerland
3. Division of Transplantation; Geneva University Hospitals; Geneva Switzerland
4. Private Practice; Geneva Switzerland
5. Division of Pathology; Geneva University Hospitals; Geneva Switzerland
6. Virology Laboratory; Geneva University Hospitals; Geneva Switzerland
7. Private Practice; Lausanne Switzerland
8. Division of Clinical Pharmacology and Toxicology; Geneva University Hospitals; Geneva Switzerland
9. Division of Gastroenterology and Division of Transplantation; CHUV; Lausanne Switzerland