Clinical features and outcomes of delayed perforation after endoscopic submucosal dissection for early gastric cancer - Hanaoka, N.; Uedo, N.; Ishihara, R.; Higashino, K.; Takeuchi, Y.; Inoue, T.; Chatani, R.; Hanafusa, M.; Tsujii, Y.; Kanzaki, H.; Kawada, N.; Iishi, H.; Tatsuta, M.; Tomita, Y.; Miyashiro, I.; Yano, M. (Endoscopy, 2010)