1. Department of Anesthesiology, Guangdong Second Provincial General Hospital, Guangzhou 510317, China.
2. Surgical Training Physician, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China.
3. Medical Research Center of Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangdong Provincial Cardiovascular Institute, Guangzhou 510080, China.
4. Department of Anesthesia, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China.