[Tang, Chun-Han; Ren, Tao; Chen, Tai-Yu] Chengdu Med Coll, Clin Med Coll, Chengdu, Peoples R China.
[Qin, Ling] Chengdu Med Coll, Dept Gastroenterol, Clin Med Coll, Affiliated Hosp 1, Chengdu, Peoples R China.
[Gao, Ying-Chun] Pengzhou Peoples Hosp, Oncol Dept, Chengdu, Peoples R China.
[Xu, Ke; Ren, Tao; Liu, Tao] Chengdu Med Coll, Affiliated Hosp 1, Oncol Dept, 278 Middle Sect Baoguang St, Chengdu 610500, Sichuan, Peoples R China.