Journal
- the japanese journal of gastroenterological surgery7
- bmc surgery6
- journal of crohn's and colitis6
- journal of infection and chemotherapy6
- nihon gekakei rengo gakkaishi (journal of japanese college of surgeons)6
- nihon rinsho geka gakkai zasshi (journal of japan surgical association)6
- american journal of gastroenterology5
- diseases of the colon and rectum5
- nihon shokakibyo gakkai zasshi = the japanese journal of gastro-enterology5