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Grotemeyer KH, Husstedt IW, Schlake HP.Grotemeyer KH, et al. Among authors: husstedt iw.Dtsch Med Wochenschr. 1987 Nov 6;112(45):1740-3. doi: 10.1055/s-2008-1068322.Dtsch Med Wochenschr. 1987.PMID: 2890509Clinical Trial.German.