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Helm A, Reding R.Helm A, et al. Among authors: reding r.Zentralbl Chir. 1976;101(8):470-6.Zentralbl Chir. 1976.PMID: 961158German.No abstract available.
HELM A, REDING R.HELM A, et al. Among authors: reding r.Zentralbl Chir. 1961 Oct 7;86:2122-6.Zentralbl Chir. 1961.PMID: 13906319German.No abstract available.