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Pfaff M, Seidl A, Angst K, Ramseier F, Seifritz E, Quednow BB, Böker H.Pfaff M, et al. Among authors: quednow bb.Psychiatr Prax. 2013 Oct;40(7):385-90. doi: 10.1055/s-0032-1332970. Epub 2013 Mar 4.Psychiatr Prax. 2013.PMID: 23459951Free article.German.