1. Department of Perinatology, Obstetrics and Gynecology, Polish Mother’s Memorial Hospital Research Institute in Lodz, 93-338 Lodz, Poland
2. Department of Obstetrics and Gynecology, Polish Mother’s Memorial Hospital Research Institute in Lodz, 93-338 Lodz, Poland
3. Department of Prenatal Cardiology, Polish Mother’s Memorial Hospital Research Institute in Lodz, 93-338 Lodz, Poland
4. Department of Gynecology and Obstetrics, Medical University of Lodz, 90-419 Lodz, Poland