1. Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
2. Centre for Assisted Reproductive Technology, Division of Obstetrics and Gynaecology, Careggi University Hospital, Florence, Italy
3. Centre for Bleeding Disorders and Coagulation, Department of Oncology, Careggi University Hospital, Florence, Italy
4. Department of Clinical and Experimental Biomedical Sciences, University of Florence, Florence, Italy