1. Department of Head and Neck SurgeryThe University of Texas MD Anderson Cancer CenterHouston TX
2. Department of Oral and Maxillofacial SurgeryGuangdong General Hospital & Guangdong Academy of Medical SciencesGuangzhou China
3. Department of EpidemiologyThe University of Texas MD Anderson Cancer CenterHouston TX
4. Department of Otorhinolaryngology‐Head and Neck SurgeryYuhuangding Hospital of Qingdao UniversityYantai China
5. Department of Otolaryngology‐Head and Neck SurgeryGuangdong General Hospital and Guangdong Academy of Medical SciencesGuangzhou Guangdong510080 China
6. Department of Otolaryngology & head and neck Surgery2nd affiliated hospital of Anhui Medical UniversityHefei China
7. Duke Cancer Institute, Duke University Medical CenterDurham NC