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Rübsamen-Waigmann, H. and Briesen, H. v. and Regeniter, A. and Goetzens, M. and Gerte, S. and Scholz, C. and Biesert, L. and Linz, U. and Nielsen, C. and Andreesen, Reinhard and Büttner, C. and Brede, H.D. (1990) Indicators of disease progression. I. Relations to viral cultures on lymphocytes and macrophages and to a decrease of serum cholesterol. Microbiologist 2, pp. 90-97.