Affiliation: | (1) Institute of Biochemistry, Medical Faculty of the E. Kardelj University, Vrazov trg 2, 61 000 Ljubljana, Yugoslavia;(2) Lek, Pharmaceutical and Chemical Works, Verovkova 57, 61 000 Ljubljana, Yugoslavia;(3) Boris Kidri Institute of Chemistry, Hajdrihova 19, 61 000 Ljubljana, Yugoslavia |