1. Hospital Management Institute, Medical Innovation Research Department, Chinese PLA General Hospital, Beijing, China
2. Department of General Thoracic Surgery, First Medical Center of Chinese PLA General Hospital, Beijing, China
3. Department of Emergency Medicine, General Hospital of Northern Theatre Command, Shenyang, Liaoning, China
4. Department of General Medicine, First Medical Center of Chinese PLA General Hospital, Beijing, China
5. Department of Emergency, Hainan Hospital of Chinese PLA General Hospital, Sanya, Hainan, China