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Frickhofen N, Heit W, Raghavachar A, Porzsolt F, Heimpel H.Frickhofen N, et al.Klin Wochenschr. 1986 Nov 17;64(22):1165-70. doi: 10.1007/BF01728454.Klin Wochenschr. 1986.PMID: 3492629
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Raghavachar A, Frickhofen N, Heimpel H.Raghavachar A, et al. Among authors: frickhofen n.Dtsch Med Wochenschr. 1987 Apr 3;112(14):556-9. doi: 10.1055/s-2008-1068097.Dtsch Med Wochenschr. 1987.PMID: 3829939German.No abstract available.
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