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Klett M, Schönberg D.Klett M, et al.Dtsch Med Wochenschr. 1981 Jan 2;106(1):6-12. doi: 10.1055/s-2008-1070246.Dtsch Med Wochenschr. 1981.PMID: 7449654German.
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Grüters A, Delange F, Giovannelli G, Klett M, Rochiccioli P, Torresani T, Grant D, Hnikova O, Maenpäa J, Rondanini GF, et al.Grüters A, et al. Among authors: klett m.Horm Res. 1994;41(1):1-2. doi: 10.1159/000183868.Horm Res. 1994.PMID: 8013935No abstract available.
Klett M, Ohlig M, Manz F, Tröger J, Heinrich U.Klett M, et al.Acta Paediatr Suppl. 1999 Dec;88(432):18-20. doi: 10.1111/j.1651-2227.1999.tb01149.x.Acta Paediatr Suppl. 1999.PMID: 10626570Clinical Trial.