Eugonia is a full service IVF and assisted reproduction clinic based in Athens, Greece. With Dr Trifon Lainas as Director our unit has successful pregnancy rates comparable to the best clinics worldwide. Our dedicated scientific team actively participates in clinical trials aimed at furthering knowledge in the field of assisted reproduction and we are proud to have had our studies published by esteemed international scientific journals such as Human Reproduction, the Journal of Human Reproductive Sciences and Reproductive BioMedicine Online. In our most recent study, which is the largest internationally with regard to the number of patients with polycystic ovarian syndrome, we show that the use of a flexible GnRH antagonist protocol leads to a significantly lower incidence of severe ovarian hyperstimulation syndrome (OHSS) by 20%, when compared to the long GnRH agonist protocol, without reducing pregnancy rates.