1. Division of Audiology and Communication DisordersDepartment of Otolaryngology–Head and Neck SurgeryUniversity of Louisville College of MedicineLouisville Kentucky U.S.A.
2. Department of Otolaryngology–Head and Neck SurgeryUniversity of KentuckyLexington Kentucky U.S.A.
3. Division of Otolaryngology–Head and Neck SurgeryDepartment of SurgeryUniversity of Nairobi College of Health SciencesNairobi Kenya