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Direk N, Koudstaal PJ, Hofman A, Ikram MA, Hoogendijk WJ, Tiemeier H.Direk N, et al. Among authors: tiemeier h.Biol Psychiatry. 2012 Aug 15;72(4):318-23. doi: 10.1016/j.biopsych.2012.01.019. Epub 2012 Feb 28.Biol Psychiatry. 2012.PMID: 22381733