1. Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland
2. Department of Surgery, Curry Cabral Hospital, Lisbon, Portugal
3. Department of Surgery, Ospedale San Raffaele, Milan, Italy
4. Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
5. Department of Surgery, Fundeni Institute, Bucharest, Romania
6. Department of Surgery, University of Virginia, Charlottesville
7. Department of Surgery, Medical College of Wisconsin, Milwaukee
8. Department of Surgery, University Hospital Essen, Essen, Germany
9. Department of Surgery, Duke Medical Center, Durham, North Carolina
10. Department of Surgery, Massachusetts General Hospital, Boston
11. Department of Surgery, Cliniques Universitaires Saint-Luc, Brussels, Belgium
12. Department of Surgery, Hôpitaux Universitaires de Genève, Geneva, Switzerland
13. Department of Surgery, Eastern Hepatobiliary Surgery Hospital, Shanghai, China