1. Vascular Laboratory, Department of Clinical Therapeutics, Alexandra Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece;
2. Second Department of Obstetrics and Gynecology, Aretaieio Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece;
3. Hormonal and Biochemical Laboratory, Aretaieio Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece