1. Department of Otolaryngology—Head and Neck Surgery, Peking University Third Hospital, Beijing, China
2. Department of Otolaryngology—Head and Neck Surgery, University of Iowa, Iowa City, Iowa
3. Department of Communication Sciences and Disorders, University of Iowa, Iowa City, Iowa
4. Department of Communication Sciences and Disorders, Augustana College, Rock Island, Illinois
5. Postgraduate Program in Ciencias Fonoaudiologicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil