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Erdmann M, Paulus WE, Flock F, Herget I, Terinde R, Grab D.Erdmann M, et al. Among authors: grab d.Z Geburtshilfe Neonatol. 1999 Jan-Feb;203(1):18-23.Z Geburtshilfe Neonatol. 1999.PMID: 10427668Clinical Trial.German.