1. Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
2. Department of Nephrology, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
3. Department of Breast and Thyroid Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
4. Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, UK