1. Institute of Natural Sciences, Federal University of Alfenas – UNIFAL, Minas Gerais, Brazil
2. Department of Epidemiology, Public Health School of the University of São Paulo – USP, Brazil
3. Hospital Foundation of the State of Minas Gerais – FHEMIG, Minas Gerais, Brazil
4. The Richard Stockton College of New Jersey, Pomona, NJ, USA