1. Division of Endocrinology and Diabetes, "Aghia Sophia" Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
2. Unit of Reproductive Endocrinology, First Department of Obstetrics and Gynecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
3. Forth Department of Internal Medicine, Hippokration Hospital, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
4. Department of Endocrinology and Diabetes, Hellenic Red Cross Hospital, Athens, Greece
5. Division of Endocrinology and Diabetes, Second Department of Obstetrics and Gynecology, Medical School, National and Kapodistrian University of Athens, Athens, Greece