1. Department of Communicative Disorders, The University of Alabama, Tuscaloosa
2. Department of Rehabilitation Services, LeBonheur Children's Hospital, Memphis, TN
3. Department of Physical Rehabilitation, Druid City Hospital, Tuscaloosa, AL
4. Speech Pathology Department, Queensland Children's Hospital, Children's Health Queensland Hospital and Health Service, Brisbane, Australia
5. Speech Pathology Department, School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia