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de Groot PC, Dekkers OM, Romijn JA, Dieben SW, Helmerhorst FM.de Groot PC, et al. Among authors: dekkers om.Hum Reprod Update. 2011 Jul-Aug;17(4):495-500. doi: 10.1093/humupd/dmr001. Epub 2011 Feb 18.Hum Reprod Update. 2011.PMID: 21335359Review.