Prof. Polyzos is the Head of Reproductive Medicine Department of Dexeus Mujer, at Dexeus University Hospital in Barcelona Spain and a Visiting Professor in the Department of Reproductive Medicine in University of Gent in Belgium. He is a Member of the Executive Committee (ExCO) of the European Society of Human Reproduction and Embryology (ESHRE). Prof. Polyzos is the principal investigator in several large pioneering multinational trials and a key opinion leader in the field of Reproductive Medicine. He has published ~200 publications and is a Senior Editor in RBMO and member of the ESHRE guideline development group for ovarian stimulation.