Siyu Sun, Sheng Wang, Guoxin Wang, Nan Ge, Jingang Liu
The Shengjing Hospital of China Medical University, The Second Hospital, China Medical University, Shenyang, Liaoning Province, China.
Gastrointest Endosc. 2010 Sep;72(3):615-6. doi: 10.1016/j.gie.2010.02.032. Epub 2010 Jun 11.