1. Department of Obstetrics and Gynecology Institute of Medical and Surgical Sciences University of Foggia Foggia Italy
2. Department of Maternal Fetal Medicine Cristo Re Hospital Rome Italy
3. Department of Obstetrics and Gynecology The First I.M. Sechenov Moscow State Medical University Moscow Russia
4. Department of Obstetrics and Gynecology Casa di Cura Salus srl Brindisi Italy
5. Department of Obstetrics and Gynecology University of Chieti Chieti Italy
6. Local Health Unit of Pescara Pescara Italy
7. Department of Medical Sciences University of Ferrara Ferrara Italy
8. Fondazione Poliambulanza Hospital Brescia Italy