1. Department of Clinical Medicine; Faculty of Health Sciences; UiT-The Arctic University of Norway; Tromsø Norway
2. Centre for Medical Education and Clinical Research (CEMIC); University Hospital; Buenos Aires Argentina
3. Division of Maternal-Fetal Medicine; Department of Obstetrics and Gynecology; New York University SOM; New York NY USA
4. Department of Obstetrics and Gynecology; Arnas Civico Hospital; Palermo Italy