1. Department of Otolaryngology Head and Neck Surgery Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University) Ministry of Education Beijing Tongren HospitalCapital Medical University Beijing China
2. Department of Head and Neck Surgery The University of Texas MD Anderson Cancer Center Houston Texas USA
3. Department of Epidemiology The University of Texas MD Anderson Cancer Center Houston Texas USA
4. Department of Head and Neck Surgery The Third Affiliated Hospital of Kunming Medical University Kunming China
5. Physical Examination Center Union HospitalTongji Medical CollegeHuazhong University of Science and Technology Wuhan China