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Treib J, Haass A.Treib J, et al. Among authors: haass a.Dtsch Med Wochenschr. 1997 Oct 24;122(43):1319-22. doi: 10.1055/s-2008-1047766.Dtsch Med Wochenschr. 1997.PMID: 9410696Review.German.No abstract available.