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Bouwman II, Kollen BJ, van der Meer K, Nijman RJ, van der Heide WK.Bouwman II, et al. Among authors: kollen bj.BMC Fam Pract. 2014 Jan 14;15:9. doi: 10.1186/1471-2296-15-9.BMC Fam Pract. 2014.PMID: 24422708Free PMC article.
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Van der Meer S, Kollen BJ, Hirdes WH, Steffens MG, Hoekstra-Weebers JE, Nijman RM, Blanker MH.Van der Meer S, et al. Among authors: kollen bj.BJU Int. 2013 Jul;112(1):26-31. doi: 10.1111/bju.12029. Epub 2013 Mar 6.BJU Int. 2013.PMID: 23465178Clinical Trial.