1. Department of Obstetrics & Gynecology, Polish Mother's Memorial Research Hospital in Łódź , Poland
2. Department of Prenatal Cardiology, Polish Mother's Memorial Hospital Research Institute, Lodz , Poland
3. Faculty of Health Sciences, The State University of Applied Sciences, Plock , Poland
4. Department of Neonatology, Polish Mother's Memorial Research Hospital in Łódź , Poland
5. Department of Intensive Care and Neonatal Malformations, Polish Mother's Memorial Research Hospital in Łódź , Poland
6. Fetal Malformations Department, Medical University of Łódź , Poland
7. Department of Obstetrics and Gynecology, Weill Medical College of Cornell University, New York, New York , USA