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de Beurs DP, de Groot MH, de Keijser J, Verwey B, Mokkenstorm J, Twisk JW, van Duijn E, van Hemert AM, Verlinde L, Spijker J, van Luijn B, Vink J, Kerkhof AJ.de Beurs DP, et al. Among authors: kerkhof aj.Trials. 2013 Jan 9;14:9. doi: 10.1186/1745-6215-14-9.Trials. 2013.PMID: 23302322Free PMC article.Clinical Trial.
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van Spijker BA, van Straten A, Kerkhof AJ.van Spijker BA, et al. Among authors: kerkhof aj.Trials. 2010 Mar 9;11:25. doi: 10.1186/1745-6215-11-25.Trials. 2010.PMID: 20214777Free PMC article.Clinical Trial.
Huisman A, Kerkhof AJ, Robben PB.Huisman A, et al. Among authors: kerkhof aj.Suicide Life Threat Behav. 2011 Feb;41(1):41-9. doi: 10.1111/j.1943-278X.2010.00015.x.Suicide Life Threat Behav. 2011.PMID: 21309823
van Spijker BA, Majo MC, Smit F, van Straten A, Kerkhof AJ.van Spijker BA, et al. Among authors: kerkhof aj.J Med Internet Res. 2012 Oct 26;14(5):e141. doi: 10.2196/jmir.1966.J Med Internet Res. 2012.PMID: 23103835Free PMC article.Clinical Trial.
de Beurs DP, de Groot MH, Bosmans JE, de Keijser J, Mokkenstorm J, Verwey B, van Duijn E, de Winter RF, Kerkhof AJ.de Beurs DP, et al. Among authors: kerkhof aj.Trials. 2013 Nov 6;14:372. doi: 10.1186/1745-6215-14-372.Trials. 2013.PMID: 24195781Free PMC article.Clinical Trial.