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Wirtzfeld A, Klein G, Himmler FC, Schmidt G, Kutschera I, Sauer E.Wirtzfeld A, et al.Dtsch Med Wochenschr. 1980 Oct 3;105(40):1379-83. doi: 10.1055/s-2008-1070875.Dtsch Med Wochenschr. 1980.PMID: 7449633Clinical Trial.German.
Klein G, Wirtzfeld A, Schnelle K.Klein G, et al. Among authors: wirtzfeld a.MMW Munch Med Wochenschr. 1983 Apr 8;125(14):277-80.MMW Munch Med Wochenschr. 1983.PMID: 6134232German.No abstract available.
Wirtzfeld A, Klein G.Wirtzfeld A, et al.Dtsch Med Wochenschr. 1982 Feb 26;107(8):310-2. doi: 10.1055/s-2008-1069924.Dtsch Med Wochenschr. 1982.PMID: 6120824German.No abstract available.
von Bibra H, Ebner U, Busch U, Klein G, Alt E, Wirtzfeld A.von Bibra H, et al. Among authors: wirtzfeld a.Z Kardiol. 1984 Jul;73(7):460-5.Z Kardiol. 1984.PMID: 6485472German.
Wirtzfeld A, Schmidt G, Himmler FC, Klein G, Sauer E.Wirtzfeld A, et al.Dtsch Med Wochenschr. 1980 Apr 11;105(15):525-30. doi: 10.1055/s-2008-1070701.Dtsch Med Wochenschr. 1980.PMID: 6988194Review.German.No abstract available.
Klein G, Sauer E, Bauer R, Wirtzfeld A, Sebening H.Klein G, et al. Among authors: wirtzfeld a.Arzneimittelforschung. 1981;31(1a):257-9.Arzneimittelforschung. 1981.PMID: 7195236No abstract available.