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Strandheim A, Bratberg GH, Holmen TL, Coombes L, Bentzen N.Strandheim A, et al.Child Adolesc Psychiatry Ment Health. 2011 May 20;5(1):17. doi: 10.1186/1753-2000-5-17.Child Adolesc Psychiatry Ment Health. 2011.PMID: 21599930Free PMC article.