1. Division of Head and Neck SurgeryUCLA School of MedicineLos AngelesCalifornia
2. Division of Head and Neck SurgeryHarbor‐UCLA Medical CenterTorranceCalifornia
3. Electromyography LaboratoryDivision of NeurologyUCLA School of MedicineLos AngelesCalifornia
4. Department of OtolaryngologyHarvard Medical SchoolBostonMassachusetts