Corresponding Author

Department of Head and Neck Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China

Correspondence

Ke Li, Department of Head and Neck Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, No. 440 Jiyan Road, Jinan City 250117, Shandong Province, China.

Email: lili_ke2017@aliyun.com