1. Department of Gastroenterology and Hepatology, Zhongshan Hospital, Department of Chemistry, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, P. R. China
2. Department of Urology, Zhongshan Hospital, Zhongshan Hospital Wusong Branch, Fudan University, Shanghai 200032, P. R. China
3. Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, P. R. China