Cun-Shuan Xu, An-Shi Zhang, Hong-Peng Han, Jin-Yun Yuan, Cui-Fang Chang, Wen-Qiang Li, Ke-Jin Yang, Li-Feng Zhao, Yu-Chang Li, Hui-Yong Zhang, Salman Rahman, Jing-Bo Zhang
World J Gastroenterol. 2004 Sep 15; 10(18): 2680–2689. Published online 2004 Sep 15. doi: 10.3748/wjg.v10.i18.2680