Dr. Masayuki Otsuka
| Prefecture | Chiba Prefecture |
| Belonging | Chiba University Hospital https://www.ho.chiba-u.ac.jp/hosp/section/kantansui/index.html |
| Specialized | hepatobiliary and pancreatic surgery |
| Experienced | liver, biliary and pancreatic surgery, liver transplantation |
| Graduated University | Chiba University |
