[1] Zhengzhou Univ, Acad Med Sci, Henan Inst Med & Pharmaceut Sci, Zhengzhou, Peoples R China
[2] Zhengzhou Univ, Sch Basic Med Sci, Zhengzhou, Peoples R China
[3] Zhengzhou Univ, Henan Key Lab Tumor Epidemiol, Zhengzhou, Peoples R China
[4] Zhengzhou Univ, State Key Lab Esophageal Canc Prevent & Treatment, Zhengzhou, Peoples R China
[5] Zhengzhou Univ, Coll Publ Hlth, Zhengzhou, Peoples R China