[1] Peking Univ, Key Lab Carcinogenesis & Translat Res, Dept Integrat Chinese & Western Med, Minist Educ,Canc Hosp & Inst, Beijing 100142, Peoples R China
[2] Peking Univ, Int Hosp, Dept Gastroenterol, Beijing 102206, Peoples R China
[3] Ningxia Med Univ, Ningxia Res Ctr Modern Hui Med Engn & Technol, Key Lab Hui Ethn Med Modernizat, Minist Educ,Pharm Coll, Yinchuan 750004, Ningxia, Peoples R China
[4] Peking Univ, Hlth Sci Ctr, Dept Integrat Chinese & Western Med, Tasly Microcirculat Res Ctr, 38 Xue Yuan Rd, Beijing 100191, Peoples R China