Yachi, A [Classification and significance of gastrointestinal polyps]. [electronic resource] - Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine May 1992 - 603-9 p. digital Publication Type: Journal Article ISSN: 0021-5384 Subjects--Topical Terms: Colonic Polyps--classificationHumansPolyps--classificationStomach Neoplasms--classification