1. Departament of Pediatrics, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte, Brasil;
2. Departament of Pathology, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte, Brasil;
3. Department Gynecology and Obstetrics, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte, Brasil