1. Department of Speech-Language Pathology, California State University, Long Beach
2. Communication Disorders and Sciences Program, Southern Illinois University, Carbondale
3. Communication Sciences and Disorders Program, Eastern Michigan University, Ypsilanti
4. Mayo Clinic, Division of Speech Pathology, Department of Neurology, Rochester, MN
5. Hospital for the Rehabilitation of Craniofacial Anomalies, University of São Paulo, Brazil
6. Department of Speech, Language Pathology and Audiology, Bauru School of Dentistry, and Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Brazil