1. 1 Department of Clinical Pathology , Nadezhda Women’s Health Hospital – Sofia , Bulgaria
2. 2 Neuropathological Laboratory , University Hospital “Sv. Ivan Rilski” – Sofia , Bulgaria
3. 3 Department of Anatomy and Histology, Pathology and Forensic Medicine , University “Sv. Kliment Ohridski” – Sofia , Bulgaria
4. 4 Department of Research , Nadezhda Women’s Health Hospital – Sofia , Bulgaria
5. 5 Department of Cardiology , Nadezhda Women’s Health Hospital – Sofia , Bulgaria
6. 6 Department of Pediatric Cardiology , National Cardiology Hospital – Sofia , Bulgaria
7. 7 Department of Prenatal Diagnostics , Nadezhda Women’s Health Hospital – Sofia , Bulgaria
8. 8 Department of Obstetrics & Gynaecology , Nadezhda Women’s Health Hospital – Sofia , Bulgaria