1. Department of Gynecology and Obstetrics, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil;
2. School of Medical Sciences, University of Campinas, Campinas, SP, Brazil;
3. Department of Pathology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil;
4. Center of Molecular Biology and Genetic Engineering, University of Campinas, Campinas, SP, Brazil