1. Research and Education Institute (IEP), Hospital Sirio-Libanes, Sao Paulo, Sao Paulo, Brazil
2. School of Nursing, Federal University of Goias, Goiania, Goias, Brazil
3. Department of Statistics, Institute of Mathematics and Statistics, Sao Paulo University, Sao Paulo, Sao Paulo, Brazil
4. Department of Epidemiology, Faculty of Public Health, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
5. Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiania, Goias, Brazil