First department of surgery, Hokkaido University school of Medicine

First department of surgery, Hokkaido University school of Medicine

First department of surgery, Hokkaido University school of Medicine

First department of surgery, Hokkaido University school of Medicine

First department of surgery, Hokkaido University school of Medicine

First department of surgery, Hokkaido University school of Medicine

Pediatrics Hokkaido University

Abashiri Kosei Hospital