1. Department of Obstetrics and Gynecology 2U, Sant’Anna Hospital, Città della Salute e della Scienza of Turin, University of Turin, Turin, Italy
2. Department of Epidemiology, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
3. Department of Neonatology, Sant’Anna Hospital, Città della Salute e della Scienza of Turin, University of Turin, Turin, Italy
4. Department of Pediatrics and Neonatology, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria, Italy
5. Department of Obstetrics and Gynecology, Tor Vergata University Hospital, Rome, Italy