1. Department of Critical Care Medicine, the Second Affiliated Hospital of Harbin Medical University, Harbin, China;
2. Department of Critical Care Medicine, Harbin Medical University Cancer Hospital, Harbin, China;
3. Department of Anesthesiology, the Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, China;
4. Department of Anesthesiology, Shenzhen Hospital (Futian) of Guangzhou University of Chinese Medicine, Shenzhen, China;
5. Department of Anesthesiology, TEDA International Cardiovascular Hospital, Tianjin, China