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- ASC-US (Asperger Syndrome Coalition of the United States)
- ASA (Autism
Society of America)
- Floortime and the DIR in Bucks County
- ICDL (The Interdisciplinary Council on Developmental and Learning Disorders)
- LDAA (Learning Disabilities Association of America)
- National Autistic Society (United Kingdom)
- OASIS (Online Asperger Syndrome Information and Support)
- Stanley I. Greenspan, M.D.
- Tony Attwood (Asperger's expert)
- Yale Child Study Center