1. Department of Perinatology, Obstetrics and Gynaecology, Polish Mother’s Memorial Hospital Research Institute, 93-338 Lodz, Poland
2. Department of Obstetrics and Gynaecology, Polish Mother’s Memorial Health Institute, 93-338 Lodz, Poland
3. Department of Prenatal Cardiology, Polish Mother’s Memorial Hospital Research Institute, 93-338 Lodz, Poland
4. Department of Gynaecology and Obstetrics, Medical University of Lodz, 90-419 Lodz, Poland
5. Obstetrics Ward of the Polish Mother’s Memorial Health Institute, 93-338 Lodz, Poland
6. Department of Obstetrics, Gynaecology and Gynaecology Oncology, Medical University of Lodz, 93-113 Lodz, Poland