1. Clinic for Gynaecology and Obstetrics, Clinical Centre of Serbia, Belgrade, Serbia;
2. School of Medicine, University of Belgrade, Belgrade, Serbia;
3. Laboratory for Cellular Physiology, School of Medicine, Institute of Medical Physiology, University of Belgrade, Belgrade, Serbia;
4. Clinic for Gynaecology and Obstetrics Narodni Front, Belgrade, Serbia;
5. Department of Maternal and Child Services, NMC Royal Hospital DOP Dubai, Dubai, United Arab Emirates;
6. School of Medicine, Institute of Social Medicine, University of Belgrade, Belgrade, Serbia