1. Center for Adolescent Medicine and UNESCO Chair on Adolescent Health Care; First Department of Pediatrics; School of Medicine; National and Kapodistrian University of Athens; Aghia Sophia Children's Hospital; Athens Greece
2. Unit of Clinical and Translational Research in Endocrinology; First Department of Pediatrics; School of Medicine; National and Kapodistrian University of Athens; Aghia Sophia Children's Hospital; Athens Greece
3. Division of Pediatric-Adolescent Gynecology and Reconstructive Surgery; Second Department of Obstetrics and Gynecology; School of Medicine; National and Kapodistrian University of Athens; Aretaieion Hospital; Athens Greece
4. Ultrasound and Fetal Medicine Unit; Second Department of Obstetrics and Gynecology; School of Medicine; National and Kapodistrian University of Athens; Aretaieion Hospital; Athens Greece