1. The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, China
2. School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China
3. Sichuan Center for Disease Control and Prevention, Chengdu, China
4. West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, China