1. Department of Human Resources, Chinese People’s Liberation Army General Hospital, Outpatient Building, 28 Fuxing Road, Haidian, Beijing 100853, China
2. Department of Innovative Medical Research, Chinese People’s Liberation Army General Hospital, Outpatient Building, 28 Fuxing Road, Haidian, Beijing 100853, China
3. Hospital Management Institute, Department of Innovative Medical Research, Chinese People’s Liberation Army General Hospital, Outpatient Building, 28 Fuxing Road, Haidian, Beijing 100853, China