[1] Univ Hosp Bratislava, Dept Gynaecol & Obstet 2, Ruzinovska 6, Bratislava 82106, Slovakia
[2] Masaryk Univ Hosp, Dept Obstet & Gynaecol, Brno, Czech Republic
[3] Charles Univ Prague, Fac Med Hradec Kralove, Univ Hosp Hradec Kralove, Dept Gynaecol & Obstet, Hradec Kralove, Czech Republic
[4] Univ Pavel Jozef Safarik, Hosp AGEL Kosice Saca, Dept Obstet & Gynaecol, Kosice, Slovakia