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Quednow BB, Schmechtig A, Ettinger U, Petrovsky N, Collier DA, Vollenweider FX, Wagner M, Kumari V.Quednow BB, et al.Biol Psychiatry. 2009 Sep 15;66(6):614-20. doi: 10.1016/j.biopsych.2009.05.007. Epub 2009 Jun 28.Biol Psychiatry. 2009.PMID: 19545856Free PMC article.