1. Department of Anesthesiology, The Affiliated Shenmu Hospital of Northwest University, Shenmu, Shaanxi 719300, P.R. China
2. Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, P.R. China
3. Department of Anesthesiology, Suqian Hospital of Nanjing Drum‑Tower Hospital Group, Suqian, Jiangsu 223865, P.R. China