1. Medical Education Administrate Office, People’s Hospital of Ningxia Hui Autonomous Region, Yinchuan, China
2. Department of Endocrinology, Cardiovascular and Cerebrovascular Disease Hospital, General Hospital of Ningxia Medical University, Yinchuan, China
3. Department of Radiology, The 942th Hospital of the People’s Liberation Army Joint Logistics Support Force, Yinchuan, China