1. Rigshospitalet, Copenhagen University Hospital; Department of Surgery and Transplantation C2122; Blegdamsvej 9 Copenhagen Denmark DK-2100 Ø
2. Kirurgisk Klinik Hvidovre; Hvidovrevej 342, 1. sal Hvidovre Denmark 2650
3. Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University Hospital; The Cochrane Hepato-Biliary Group; Blegdamsvej 9 Copenhagen Denmark DK-2100
4. Rigshospitalet, Copenhagen University Hospital; Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812; Blegdamsvej 9 Copenhagen Denmark DK-2100