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Donker T, van Straten A, Riper H, Marks I, Andersson G, Cuijpers P.Donker T, et al. Among authors: cuijpers p.Trials. 2009 Jul 27;10:59. doi: 10.1186/1745-6215-10-59.Trials. 2009.PMID: 19635128Free PMC article.Clinical Trial.
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Seekles W, van Straten A, Beekman A, van Marwijk H, Cuijpers P.Seekles W, et al. Among authors: cuijpers p.Trials. 2011 Jul 7;12:171. doi: 10.1186/1745-6215-12-171.Trials. 2011.PMID: 21736720Free PMC article.Clinical Trial.