1. SAY: The Stuttering Association for the Young, New York, NY, USA
2. Communicative Sciences and Disorders, New York University, New York, NY, USA
3. Department of Audiology and Speech Pathology, University of Melbourne, Parkville, VIC, Australia
4. South Western Sydney Local Health District, Bankstown, NSW, Australia
5. Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
6. Australian Stuttering Research Centre, University of Technology Sydney, Ultimo, NSW, Australia