1. Department of Anesthesiology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Postcode: 100026, China. E-mails: drlynn@163.com, snake650222@163.com, tuwenshao@sina.com
2. Department of Anesthesiology of Xuanwu Hospital, Capital Medical University, Postcode: 100053, China. E-mail: wtl5595@hotmail.com
3. Department of Thoracic Surgery, 1st Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, China
4. Department of Anesthesiology of Provincial Clinical College, Fujian Medical University, Postcode: 350001, China
5. Department of Emergency, Fujian Provincial Hospital, Postcode: 350001, China. E-mail: 114118814@qq.com