1. Rigshospitalet, Copenhagen University Hospital; Department of Surgery and Transplantation C2122; Blegdamsvej 9 Copenhagen Denmark DK-2100
2. Rigshospitalet, Copenhagen University Hospital; Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 3344,; Blegdamsvej 9 Copenhagen Denmark DK-2100
3. Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 3344, Rigshospitalet, Copenhagen University Hospital; Cochrane Hepato-Biliary Group; Blegdamsvej 9 Copenhagen Denmark DK-2100