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Kiefer-Schmidt I, Lim M, Wacker-Gussmann A, Ortiz E, Abele H, Kagan KO, Kaulitz R, Wallwiener D, Preissl H.Kiefer-Schmidt I, et al. Among authors: kaulitz r.J Perinat Med. 2012 Feb 10;40(3):277-86. doi: 10.1515/jpm.2011.139.J Perinat Med. 2012.PMID: 22505507