1. School of Medicine, Faculdade Israelita de Ciências da Saúde Albert Einstein, São Paulo
2. School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre
3. Postgraduate Program in Epidemiology, TelessaudeRS, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre
4. Community Health Services, Grupo Hospitalar Conceição, Porto Alegre
5. School of Medicine, Universidade de Caxias do Sul, Caxias do Sul
6. Secretary of Primary Health Care, Ministry of Health, Brasília, Brazil