[1] Xiamen Univ, Affiliated Hosp 1, Dept Gastroenterol & Hepatol, Sch Med, Xiamen, Peoples R China
[2] Third Hosp Xiamen, Dept Gastroenterol, Xiamen, Peoples R China
[3] Fujian Med Univ, Sch Clin Med, Fuzhou, Peoples R China
[4] Xiamen Univ, Affiliated Hosp 1, Sch Med, Dept Colorectal Canc Surg, Xiamen, Peoples R China