1 Department of Anesthesiology, Shanxi Province Tumor Hospital, Taiyuan and Wujiaqu People's Hospital, Wujiaqu City, Xinjiang, People's Republic of China.
2 Department of Anesthesiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33 Ba-Da-Chu Road, Shi-Jing-Shan District, Beijing, 100144, People's Republic of China. xuefushan@aliyun.com.
3 Department of Anesthesiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33 Ba-Da-Chu Road, Shi-Jing-Shan District, Beijing, 100144, People's Republic of China.