1. International Center for Equity in Health, Federal University of Pelotas, Rua Marechal Deodoro 1160 – 3° Piso, Pelotas (RS), CEP:96020220, Brazil.
2. Postgraduate Programme in Epidemiology, Federal University of Pelotas, Pelotas, Brazil.
3. GAVI, The Vaccine Alliance, Geneva, Switzerland.
4. Johns Hopkins Bloomberg School of Public Health, Baltimore, United States of America.