Vrtačnik Bokal, E: Prolonged human chorionic gonadotrophin action affects angiogenic substances and improves follicular maturation, oocyte quality and fertilisation competence in patients with polycystic ovarian syndrome : 5. česko-slovenská konference reprodukční gynekologie, 16. sympozium asistované reprodukce, Brno, 22.-23. listopadu 2006. Abstrakt