1. University Medical LibraryUniversity of Basel Basel Switzerland
2. University Hospital TübingenPediatric Gastroenterology and Hepatology Stuttgart Germany
3. Institute of Liver StudiesKing's College Hospital London UK
4. Transplantation Centre University Hospital of Lausanne and University of Lausanne Lausanne Switzerland
5. Service of Gastroenterology and Hepatology University Hospital of Lausanne and University of Lausanne Lausanne Switzerland