1. Cochrane Hepato-Biliary Group; Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University Hospital; Copenhagen Denmark
2. S.C. Epatologia e Gastroenterologia; Azienda Socio-Sanitaria Territoriale Grande Ospedale Metropolitano Niguarda; Milan Italy
3. Department of Surgery; University Hospital Coventry and Warwickshire; Coventry UK
4. University Hospitals Birmingham NHS Foundation Trust; Birmingham UK
5. Division of Hepatobiliary and Abdominal Transplant surgery; University of Florida; Gainesville Florida USA
6. The ARDEN NET Centre, ENETS Centre of Excellence; University Hospitals Coventry and Warwickshire NHS Trust; Coventry UK
7. Institute of Translational Medicine, University of Liverpool; Liverpool UK
8. Surgery; University Hosptial Coventry and Warwickshire; Coventry UK