Corresponding Author

Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou City, China

Correspondence

Yuan Han, Department of Anesthesiology, Eye & ENT Hospital, Fudan University, No. 83 Fengyang Road, Xuhui District, Shanghai City, Shanghai 200031, China.

Emails: yuan.han@fdeent.or;hanyuan@eentanesthesia.com

Junli Cao, Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, No. 209 Tongshan Road, Yunlong District, Xuzhou City, Jiangsu Province 221004, China.

Email: junlicao0310@163.com