1. Institute of Histology and Embryology “Aleksandar Đ Kostić”, School of Medicine, University of Belgrade, Belgrade, Serbia
2. Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
3. Institute for Biological Research “Siniša Stanković”, University of Belgrade, Belgrade, Serbia
4. University of Belgrade, Faculty of Biology, Belgrade, Serbia
5. Serbian Academy of Sciences and Arts, Belgrade, Serbia