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Schuchert A, Hamm CW, Reimers J, Middendorf N, Bleifeld W.Schuchert A, et al. Among authors: bleifeld w.Z Kardiol. 1991 Oct;80(10):602-6.Z Kardiol. 1991.PMID: 1771959German.
Schuchert A, Hamm CW, Kalmar P, Bleifeld W.Schuchert A, et al. Among authors: bleifeld w.Klin Wochenschr. 1991 Nov 26;69(19):867-71. doi: 10.1007/BF01649560.Klin Wochenschr. 1991.PMID: 1812315
Hamm CW, Bleifeld W.Hamm CW, et al. Among authors: bleifeld w.Dtsch Med Wochenschr. 1991 Jun 7;116(23):905-8. doi: 10.1055/s-2008-1063696.Dtsch Med Wochenschr. 1991.PMID: 2040210Review.German.No abstract available.