1. Department of Otolaryngology—Head and Neck Surgery, The Ohio State University Wexner Medical Center, 915 Olentangy River Road, Suite 4000, Columbus, Ohio 43212, USA
2. Centre for Language Studies, Radboud University Nijmegen, Nijmegen, The Netherlands
3. Department of Otorhinolaryngology/Head and Neck Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands