[1] Sichuan Univ, West China Hosp, Dept Ultrasound, 37 Guoxue Alley, Chengdu 610041, Peoples R China
[2] Sichuan Univ, Dept Liver Surg & Liver Transplantat, State Key Lab Biotherapy, Chengdu, Peoples R China
[3] Sichuan Univ, Ctr Canc, West China Hosp, Chengdu, Peoples R China
[4] Collaborat Innovat Ctr Biotherapy, Chengdu, Peoples R China