1. Institute of Prevention and Treatment of Cardiovascular Diseases in Alpine Environment of Plateau, Characteristic Medical Center of the Chinese People’s Armed Police Forces, Tianjin, China (mainland)
2. Department of Cardiovascular Diseases, TEDA International Cardiovascular Hospital, Tianjin, China (mainland)
3. Military General Medical Department, Characteristic Medical Center of the Chinese People’s Armed Police Forces, Tianjin, China (mainland)