1. Obstetric and Gynecology Department ‘Ospedale Civile’, Giussano, Italy
2. Sexually Transmitted Diseases Center, Ospedale Sant’Orsola-Malpighi, Bologna, Italy
3. Obstetric and Gynecology Department, Ospedale Civile, Lugo, Italy
4. Gynecology Service Vicenza, Italy
5. Gynecology Service Padua, Italy
6. R&D Mipharm, Milan, Italy