1. Department of Otolaryngology–Head and Neck SurgeryJohns Hopkins University Baltimore Maryland
2. Department of Health Policy and ManagementJohns Hopkins Bloomberg School of Public Health Baltimore Maryland
3. Department of EpidemiologyUniversity of California Irvine Irvine California
4. Division of Gynecologic OncologyDepartment of Obstetrics and Gynecology, University of California, Irvine Medical Center Orange California U.S.A.