1 Unit of Endocrinology, Diabetes Mellitus and Metabolism, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, Vassilissis Sofias str. 76, Athens, Greece.
2 Obstetrics and Gynecology Private Practice, Michalakopoulou str. 169, Athens, Greece.
3 Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Przybyszewskiego 49, 60-355, Poznan, Poland.
4 Department of Endocrinology, Diabetes and Diseases of Metabolism, Faculty of Medicine, University of Belgrade, Dr Subotića Street 8, Belgrade, Serbia.
5 Unit of Endocrinology, Diabetes Mellitus and Metabolism, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, Vassilissis Sofias str. 76, Athens, Greece. mastorak@gmail.com.