1. Rea Hospital; TEI Tech University; Athens Greece
2. Department of Obstetrics and Gynaecology; School of Medicine; Democritus University of Thrace; Alexandroupolis Greece
3. Kapodistrias University of Athens; Aretaieion University Hospital; Athens Greece
4. National Institute of Endocrinology; “Carol Davila” University of Medicine and Pharmacy; Department of Endocrinology; Bucharest Romania