Endoscopic submucosal resection of a rectal carcinoid tumor by cap aspiration - snare resection method - ÇELEBİ KOBAK, Arzu; ZEYBEL, Müjdat; AYHAN, Semin; KARA, Eray; ELLİDOKUZ, Ender (Turkish Journal of Gastroenterology, 2006)