1. Clinic for Gynecology and Obstetrics, Clinical Center “Dragisa Misovic–Dedinje”, Belgrade, Serbia
2. Clinic of Gynecology and Obstetrics, Clinical Centre of Serbia, Belgrade, Serbia
3. Faculty of Medicine University of Belgrade, Belgrade, Serbia
4. Department of Anesthesiology, Clinic of Gynecology and Obstetrics, Clinical Centre of Serbia, Belgrade, Serbia
5. Institute for Medical Statistics and Informatics, Faculty of Medicine University of Belgrade, Belgrade, Serbia
6. Department of Anesthesiology, Clinic for Cardiac Surgery, Clinical Centre of Serbia, Belgrade, Serbia
7. Clinic for Gynecology and Obstetrics “Narodni Front”, Belgrade, Serbia
8. Institute for Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine University of Belgrade, Serbia
9. Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA