[1] Tibet Autonomous Reg Peoples Hosp, Dept Oncol, Lhasa 850000, Tibet Autonomou, Peoples R China
[2] Tibet Autonomous Reg Peoples Hosp, Dept Pathol, Lhasa, Tibet Autonomou, Peoples R China
[3] Tibet Autonomous Reg Peoples Hosp, Dept Imaging, Lhasa, Tibet Autonomou, Peoples R China
[4] Sun Yat Sen Univ, Dept Second Clin Med, Zhongshan Sch Med, Guangzhou, Guangdong, Peoples R China
[5] Chinese Acad Med Sci, Dept Pathol, Natl Canc Ctr, Canc Hosp, Beijing 100021, Peoples R China
[6] Peking Union Med Coll, Beijing 100021, Peoples R China