Institute for Infectious and Tropical Diseases Clinical Center of Serbia,
2.Institute for Infectious and Tropical Diseases Clinical Center of Serbia Medical Faculty, University of Belgrade, Belgrade, Serbia, Yugoslavia
3.Institute for Infectious and Tropical Diseases Clinical Center of Serbia, Medical Faculty, University of Belgrade, Belgrade, Serbia, Yugoslavia
4.Institute for Pharmacology, Medical Faculty, University of Belgrade, Belgrade, Serbia, Yugoslavia
5.Institute for Pathology,Medical Faculty, University of Belgrade, Belgrade, Serbia, Yugoslavia