Zhang W, Meng W J, Zhou Z G
Institute of Digestive Surgery and Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
Endoscopy. 2011;43 Suppl 2 UCTN:E145-6. doi: 10.1055/s-0030-1256164. Epub 2011 May 11.