1. Department of Speech-Language Pathology, Chosun University, Gwangju, South Korea
2. Department of Communicative Sciences and Disorders, New York University, NY
3. Department of Communication Sciences and Disorders, Wayne State University, Detroit, MI
4. Department of Speech and Hearing Science, University of Illinois at Urbana–Champaign
5. Department of Communication Sciences and Disorders, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Canada