1. Department of Critical Care Medicine, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
2. Department of Radiation Oncology, Sichuan Cancer Hospital, Chengdu 610041, China
3. Department of Radiation Oncology, Sichuan Oncology Institute of Guangxi Medical University, Chengdu 610041, China
4. Institute of Combined Injuries, College of Military Preventive Medicine, Third Military Medical University, Chongqing 400038, China