1. Postgraduate Studies Program in Epidemiology, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
2. Postgraduate Studies Program in Cardiology, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
3. Hospital Sanatório Partenon, Health Secretariat of State of Rio Grande do Sul, Porto Alegre, Brazil.
4. National Institute for Science and Technology for Health Technology Assessment (IATS/CNPq), Hospital de Clinicas de Porto Alegre, Centro de Pesquisa Clínica, Porto Alegre, Brazil.
5. Faculdade de Medicina, Universidade Federal de Ciências da Saúde de Porto Alegre, Rio Grande do Sul, Brazil.