[1] Nicolaus Copernicus Univ Torun, Coll Med Bydgoszcz, Dept Obstet & Gynecol, PL-85168 Bydgoszcz, Poland
[2] Res Inst Polish Mothers Mem Hosp, Dept Obstet & Gynecol, Lodz, Poland
[3] Res Inst Polish Mothers Mem Hosp, Dept Cardiac Surg, Lodz, Poland
[4] Res Inst Polish Mothers Mem Hosp, Dept Diagnoses & Prevent Fetal Malformat, Lodz, Poland
[5] Med Univ Lodz, Lodz, Poland