2Kim Y J ,Lee S K,Cheon J H ,et al. Efficacy of Endoscopic Resection for Small Rectal Carcinoid: a Retrospective Study[J]. Korean J Gastroenterol,2008,51(3) :174-180.
3Kwaan M R, Goldberg J E, Bleday R. Rectal Carcinoid Tumors: Review of Results after Endoscopic and Surgical Therapy[J]. Arch Surg,2008,143(5) :471-475.