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机构:
Capital Med Univ, Beijing Shijitan Hosp, Dept Gen & Colorectal Surg, Beijing 100038, Peoples R China
Peking Univ, Hlth Sci Ctr, Teaching Hosp 9, Dept Gen & Colorectal Surg,Beijing Shijitan Hosp, Beijing 100871, Peoples R China Capital Med Univ, Beijing Shijitan Hosp, Dept Gen & Colorectal Surg, Beijing 100038, Peoples R China