[1] Jinan Univ, Affiliated Hosp 1, Guangzhou, Peoples R China
[2] Guangzhou Med Univ, Dept Gastroenterol, Guangzhou Women & Childrens Med Ctr, Guangzhou, Peoples R China
[3] Zhuhai Maternal & Child Hlth Hosp, Dept Anesthesiol, Zhuhai, Peoples R China
[4] Fujian Med Univ, Sch Publ Hlth, Dept Prevent Med, Fuzhou, Peoples R China
[5] Cardiff Univ, Sch Pharm & Pharmaceut Sci, Dept Canc Biol & Therapeut, Cardiff CF103AT, Wales
[6] Qionghai Hosp Tradit Chinese Med, Dept Anorectal, Qionghai, Peoples R China
[7] Qionghai Hosp Tradit Chinese Med, Dept Clin Lab, Qionghai, Peoples R China
[8] Putian Univ, Affiliated Hosp, Dept Infect Dis, Putian, Peoples R China