1. Institute of Pathophysiology, Faculty of Medicine, University of Belgrade, Dr Subotica 9 Belgrade, Serbia
2. Institute of Medical Physiology “Richard Burian”, Faculty of Medicine, University of Belgrade, Višegradska 26/II, Belgrade, Serbia
3. Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Višegradska 26, Belgrade, Serbia
4. Laboratory of Molecular Biology and Endocrinology, Vinča Institute of Nuclear Sciences, University of Belgrade, Serbia