1. Department of Otolaryngology Qilu Hospital of Shandong University Jinan China
2. NHC Key Laboratory of OtorhinolaryngologyShandong University Jinan China
3. Department of Otolaryngology‐Head and Neck SurgeryGuangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences Guangzhou China
4. Department of Head and Neck Surgery The University of Texas MD Anderson Cancer Center Houston Texas
5. Department of Epidemiology The University of Texas MD Anderson Cancer Center Houston Texas
6. Thyroid and Breast Surgery Department Hebei General Hospital Shijiazhuang China