Institution: | 1. Department of Anesthesiology, The Second Hospital of Jilin University, Changchun, China;2. Department of Anesthesiology, The Obstetrics and Gynecology Hospital of Changchun, Changchun, China;3. Department of Anesthesiology, The People's Hospital of Changchun City, Changchun, China;4. Department of Thoracic Surgery, The Second Hospital of Jilin University, Changchun, China |