Journal of Developmental and Physical Disabilities (2010) - Comment
pubmed: 20157361  doi: 10.1007/s10882-009-9165-5  issn: 1056-263x  issn: 1573-3580 

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Selma Anne José Ruiter, Han Nakken, Bieuwe F. Van Der Meulen, Carolien B. Lunenborg