1. Division of Obstetrics and Gynecology, Department of Maternal, Neonatal and Infant Health, ASL (Azienda Sanitaria Locale) Biella, Italy
2. Department of Obstetrics and Gynecology, AOUI (Azienda Ospedaliera Universitaria Integrata), University of Verona, Italy
3. Department of Pathology, ASL Biella, Italy
4. Presidio Ospedaliero Valle d'Itria, Martina Franca, Taranto, Italy
5. Division of Pediatrics and Neonatology, Department of Maternal, Neonatal and Infant Health, ASL Biella, Italy