1. Department of Minimally Invasive Digestive Surgery; Antoine Béclère Hospital; AP-HP 157 rue de la Porte de Trivaux F-92141 Clamart France
2. Paris-Sud University; Orsay France
3. Department of Digestive Diseases; Institut Mutualiste Montsouris; Paris France
4. Department of Liver Surgery; Beaujon Hospital; AP-HP Paris France
5. Department of Surgery; Seoul National University Bundang Hospital; Seongnam South Korea
6. Department of Surgery; Ulsan University and Asan Medical Center; Seoul South Korea
7. Hepatobiliary Center; Paul Brousse Hospital; Villejuif France
8. Department of Surgery; Wesley Medical Centre; Auchenflower Queensland Australia
9. Department of General and Hepatobiliary Surgery; Ghent University Hospital and Medical School; Ghent Belgium
10. Department of Surgery; San Raffaele Hospital; Milan Italy
11. The Intervention Centre; Oslo University Hospital; Oslo Norway
12. Department of Surgery; University Hospital Southampton NHS Foundation Trust; Southampton UK
13. Division of General Surgery; S. Maria di Loreto Nuevo Hospital; Naples Italy
14. Division of General and Gastroenterological Surgery; Department of Surgery; Toho University School of Medicine; Tokyo Japan
15. Department of Surgery; Memorial Sloan Kettering Cancer Center; New York New York USA
16. General Surgery and Surgical Oncology; Koo Foundation Sun Yat-Sen Cancer Center; Taipei Taiwan
17. General Surgery Department; Buenos Aires Italian Hospital; Buenos Aires Argentina
18. Department of Surgery; Tulane University; New Orleans Louisiana USA
19. Department of Surgery; Iwate Medical University School of Medicine; Iwate Japan