1. Department of Clinical Medicine, Federal Fluminense University Faculty of Medicine, Niteroi, Brazil
2. Maternal and Child Department, Federal Fluminense University Faculty of Medicine, Niteroi, Brazil
3. Department of Pathology, Federal Fluminense University Faculty of Medicine, Niteroi, Brazil
4. Department of Statistics, Federal Fluminense University, Niteroi, Brazil
5. Department of Obstetrics and Gynecology, University of Zaragoza Faculty of Medicine, Zaragoza, Spain