Chu David W, Li Jimmy C M, Lee Danny W H, Rong Zhen-Xiang, Chen Xiao-Wu, Chan Angus C W
Department of Surgery, North District Hospital, and Prince of Wales Hosptal, New Territories East Cluster, Hong Kong SAR, China.
Gastrointest Endosc. 2003 Oct;58(4):637-9. doi: 10.1067/s0016-5107(03)01886-8.