[1] Aristotle University of Thessaloniki,3rd Department of Obstetrics and Gynecology, School of Medicine, Faculty of Health Sciences
[2] Aristotle University of Thessaloniki,Laboratory of Hygiene, Social & Preventive Medicine and Medical Statistics, School of Medicine, Faculty of Health Sciences
[3] Aristotle University of Thessaloniki,Unit of Reproductive Endocrinology, 1st Department of Obstetrics and Gynecology, School of Medicine, Faculty of Health Sciences
[4] Aristotle University of Thessaloniki,Unit of Reproductive Endocrinology, 1st Department of Obstetrics and Gynecology, Department of Medicine, School of Health Sciences