TIAN Yi; LIU Pei-yu; TIAN Guo-gang.Department of Anaesthesiology; Haikou Hospital; Xiangya Medical College; Central South University; Haikou 570208; China;

• 中南大学湘雅医学院附属海口医院麻醉科;武警海南总队医院;中南大学医学院;海南海口;湖南长沙;