[1] Univ Elect Sci & Technol China, Sichuan Acad Med Sci & Sichuan Prov Peoples Hosp, Inst Hlth Policy, Chengdu, Peoples R China
[2] Univ Elect Sci & Technol China, Sichuan Acad Med Sci & Sichuan Prov Peoples Hosp, Hosp Management, Chengdu, Peoples R China
[3] Wenjiang Dist Peoples Hosp Chengdu, Chengdu, Peoples R China
[4] Tongji Univ, Shanghai Peoples Hosp 10, Sch Med, Canc Ctr, Shanghai, Peoples R China
[5] Univ Elect Sci & Technol China, Sichuan Acad Med Sci & Sichuan Prov Peoples Hosp, Dept Crit Care Med, Chengdu, Peoples R China
[6] Univ Elect Sci & Technol China, Sichuan Acad Med Sci & Sichuan Prov Peoples Hosp, Dept Ultrasound Med, Chengdu, Peoples R China