1. Department of Anesthesiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, CHINA
2. Department of Anesthesiology, The Second Hospital of Shandong University, Jinan, Shandong, CHINA
3. Department of Sports Biomechanics, Beijing Sport University, Beijing, CHINA
4. Department of Anesthesiology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, CHINA