Wiley, Journal of Child Psychology and Psychiatry, 6(51), p. 652-659, 2009
DOI: 10.1111/j.1469-7610.2009.02193.x
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http://dx.doi.org/10.1111/j.1469-7610.2009.02193.x ; http://ejournals.ebsco.com/direct.asp?ArticleID=403495F9D7C027C4C637