1. Department of Surgery, Fujita Health University School of Medicine; Banbuntane Houtokukai Hospital; 3-6-10 Otobashi, Nakagawa-ku Nagoya Aichi 454-8509 Japan
2. Department of Surgery; Iwate Medical University School of Medicine; Iwate Japan
3. Unit of Hepatobiliary Surgery and Liver Transplantation; University Hospital Reina Sofía, IMIBIC; Cordoba Spain
4. Hepatobiliary Center; Paul Brousse Hospital; Villejuif France
5. Division of General Surgery, Department of Surgery; Far-Eastern Memorial Hospital; Taipei Taiwan
6. Department of General and HPB Surgery; Loreto Nuovo Hospital; Napoli Italy