1. Institute of Microbiology
2. Institute of General Pathology
3. Department of Histology, Microbiology and Medical Biotechnologies, University of Padua, Via A. Gabelli 63, 35121 Padua, Italy
4. Institute of General Pathology, Pathological Anatomy and Veterinary Obstetrics-Surgery Clinic, University of Sassari, Via Vienna, 07100 Sassari, Italy
5. Institute of Gynecology, Catholic University, Largo A. Gemelli 8, 00168 Rome, Italy