1. Department of Otolaryngology–Head and Neck SurgeryHarvard Medical SchoolMassachusetts Eye and EarBostonMassachusettsUSA
2. Department of OtolaryngologySchool of MedicineUniversity of MinnesotaMinneapolisMinnesotaUSA
3. Center for Surgery and Public HealthBrigham and Women’s HospitalHarvard Medical SchoolBostonMassachusettsUSA
4. Department of SurgerySt Elizabeth’s Medical CenterSchool of MedicineTufts UniversityBostonMassachusettsUSA
5. Department of Otolaryngology–Head and Neck SurgeryHarvard Medical SchoolBrigham and Women’s HospitalBostonMassachusettsUSA