1. Division of Medicine, Royal Free Campus, University College London; UCL Institute for Liver & Digestive Health; Rowland Hill Street Hampstead London UK NW3 2PF
2. Rigshospitalet; Department of Hepatology; Blegdamsvej 9 Dept. 2121 Copenhagen Denmark 2100
3. Copenhagen University Hospital Hvidovre; Gastrounit, Medical Division; Kettegaards Alle Hvidovre Denmark 2650