By Cramm Jane M.   van Dijk Hanna M.   Nieboer Anna P.   in The Gerontologist

ISSN:0016-9013|53|1|142-152

Oxford University Press‎(2013)‎

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By Nieboer Anna P.   Cramm Jane M.   Meij Birgitha van der   Huijsman Robbert   in Journal of Intellectual & Developmental Disability

ISSN:1469-9532|36|2|127-136

Informa Healthcare‎(2011)‎

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