单位:[1]Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Gen Surg, Beijing, Peoples R China[2]Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Nucl Med, Beijing, Peoples R China[3]Peking Union Med Coll, Beijing, Peoples R China[4]Huazhong Univ Sci & Technol,Tongji Med Coll,Affiliated Tongji Hosp,Dept Biliary Pancreat Surg,Wuhan,Hubei,Peoples R China华中科技大学同济医学院附属同济医院[5]Chinese Acad Med Sci, Clin Immunol Ctr, Beijing, Peoples R China