1. Department of Anesthesiology, Xi'an Chang'an District Hospital, Xi’an, China
2. Anesthesia and Operation Center, Chinese People’s Liberation Army General Hospital, Beijing, China
3. Department of Clinical Medicine, Fujian Health College, Fuzhou, Fujian, China
4. Department of Anesthesiology, 81st Group Military Hospital, People's Liberation Army, Zhangjiakou, China
5. Department of Anesthesiology, Xiamen Third Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Xiamen, China