1 Second Department of Obstetrics and Gynecology, School of Medicine, National and Kapodistrian University of Athens, Aretaieio Hospital, Athens, Greece.
2 Second Department of Obstetrics and Gynecology, School of Medicine, National and Kapodistrian University of Athens, Aretaieio Hospital, Athens, Greece. Electronic address: s.a.paschou@gmail.com.
3 Second Department of Propaedeutic Internal Medicine, Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.