1. Department of Anesthesiology, The First People's Hospital of Kashgar, Xinjiang Province, China
2. Department of Anesthesiology, Panyu Central Hospital, Guangzhou, Guangdong Province, China
3. Department of Anesthesiology, Guangzhou Eighth People’s Hospital, Guangzhou Medical University, Guangzhou, Guangdong Province, China
4. Department of Anesthesiology, The First People’s Hospital of Foshan, Foshan, Guangdong Province, China
5. Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Province, China
6. Department of Anesthesiology, The third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong Province, China