Endoscopic Double Metallic Stenting in the Afferent and Efferent Loops for Malignant Afferent Loop Obstruction with Billroth II Anatomy - Kazunari Nakahara; Yoshinori Sato; Keigo Suetani; Ryo Morita; Yosuke Michikawa; Shinjiro Kobayashi; Fumio Itoh (Korean Society of Gastrointestinal Endoscopy, 2016)