1. Department of Surgery Kyoto University Graduate School of Medicine Kyoto Japan
2. Department of Surgery Hyogo College of Medicine Hyogo Japan
3. Department of HBP and Breast Surgery Ehime University Graduate School of Medicine Ehime Japan
4. Department of Anatomy and Embryology Ehime University Graduate School of Medicine Ehime Japan
5. Congenital Anomaly Research Center Kyoto University Graduate School of Medicine Kyoto Japan
6. Human Health Sciences Kyoto University Graduate School of Medicine Kyoto Japan