Chiu Philip Wai-yan, Teoh Anthony Yun-bun, Ng Enders Kwok-wai
Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China.
Gastrointest Endosc. 2010 Jun;71(7):1328-9. doi: 10.1016/j.gie.2009.10.021. Epub 2010 Feb 20.