1. Department of Surgical and Biomedical Sciences, Section of Obstetrics and Gynecology, University of Perugia, 06129 Perugia, Italy
2. GeBiSa, Research Foundation, 06129 Perugia, Italy
3. Centre of Perinatal and Reproductive Medicine, University of Perugia, 06129 Perugia, Italy
4. Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy