Affiliation: | 1. Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Laboratory of Genetics, Peking University Cancer Hospital and Institute, Beijing, P.R. China;3. Anyang Cancer Hospital, Anyang, Henan Province, P.R. China;4. Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Endoscopy Center, Peking University Cancer Hospital and Institute, Beijing, P.R. China;6. Hua County People’s Hospital, Henan Province, P.R. China |