Symposium on colon and anorectal surgery. Foreword.
D001004:Anus Diseases / Q000601:surgery*; D001005:Anus Neoplasms / Q000601:surgery; D003108:Colonic Diseases / Q000601:surgery*; D003110:Colonic Neoplasms / Q000601:surgery; D006801:Humans; D012002:Rectal Diseases / Q000601:surgery*; D012004:Rectal Neoplasms / Q000601:surgery