1. Rigshospitalet, Copenhagen University Hospital; Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812; Blegdamsvej 9 Copenhagen Denmark DK-2100
2. Rigshospitalet, Copenhagen University Hospital; Department of Surgery and Transplantation C2122; Blegdamsvej 9 Copenhagen Denmark DK-2100 Ø
3. Surgical Clinic Hvidovre; Hvidovrevej 342, 1. floor Hvidovre Denmark 2650
4. The Freeman Hospital; Institute of Transplantation; Freeman Road High Heaton Newcastle upon Tyne Tyne and Wear UK NE7 7DN
5. University of Toronto; Women's College Research Institute; 790 Bay St, Rm 735 Toronto ON Canada
6. Rigshospitalet, Copenhagen University Hospital; Department of Cardiothoracic Surgery; Blegdamsvej 9 Copenhagen Denmark DK-2100
7. 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