[1] Xi An Jiao Tong Univ, Dept Oncol, Affiliated Hosp 1, 277 Yanta West Rd, Xian 710061, Peoples R China
[2] Xi An Jiao Tong Univ, Dept Urol, Affiliated Hosp 1, Xian, Peoples R China
[3] Xian Fourth Hosp, Dept Ophthalmol, Xian, Peoples R China
[4] Peoples Hosp Ningxia Hui Autonomous Reg, Canc Ctr, Yinchuan, Ningxia, Peoples R China
[5] Ninth Hosp Xian, Dept Cardiol, Xian, Peoples R China