1. High-risk Pregnancy Unit, Obsterics/Gynecolgy Clinic ‘Narodni font’, School of Medicine; University of Belgrade; Belgrade Serbia
2. Genetic Laboratory, Obsterics/Gynecolgy Clinic ‘Narodni font’; University of Belgrade; Belgrade Serbia
3. Division of Pediatric Cardiology, Institute for Mother and Child Healthcare ‘Dr Vukan Čupić’, School of Medicine; University of Belgrade; Belgrade Serbia
4. Department of Pathology, Institute for Mother and Child Healthcare ‘Dr Vukan Čupić’; University of Belgrade; Belgrade Serbia