1. Department of Otolaryngology-Head and Neck Surgery, University of Iowa, Iowa City, IA
2. Department of Communication Sciences and Disorders, Augustana College, Rock Island, IL
3. Sivantos, Inc., Piscataway, NJ
4. Department of Speech-Language Pathology and Audiology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil