1. Department of OtolaryngologySchool of Public Health and Tropical Medicine, Tulane UniversityNew Orleans Louisiana
2. Department of OtolaryngologyDivision of Thyroid and Parathyroid SurgeryMassachusetts Eye and Ear InfirmaryBoston Massachusetts U.S.A
3. Department of Surgery, Endocrine SectionSchool of Public Health and Tropical Medicine, Tulane UniversityNew Orleans Louisiana
4. School of MedicineDepartment of EpidemiologySchool of Public Health and Tropical Medicine, Tulane UniversityNew Orleans Louisiana