1. Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Universidade Estadual de Campinas, Campinas, São Paulo, SP, Brazil
2. Laboratory of Experimental Pathology, Hospital da Mulher Prof. Dr. José Aristodemo Pinotti, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
3. Department of Pathology, Faculty of Medical Sciences, universidade Estadual de Campinas, Campinas, SP, Brazil