1. 1. Programa de Pós-Graduação em Saúde Coletiva, Universidade Estadual de Feira de Santana – PPGSC-UEFS – Feira de Santana (BA) Brasil. 2 Methods in Epidemiologic, Clinical, and Operations Research-MECOR-program, American Thoracic Society/Asociación Latinoamericana del Tórax, Montevideo, Uruguay.
2. 2 Methods in Epidemiologic, Clinical, and Operations Research-MECOR-program, American Thoracic Society/Asociación Latinoamericana del Tórax, Montevideo, Uruguay. 3 Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles (CA) USA.
3. 2 Methods in Epidemiologic, Clinical, and Operations Research-MECOR-program, American Thoracic Society/Asociación Latinoamericana del Tórax, Montevideo, Uruguay.4. Divisão de Pneumologia, Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo (SP) Brasil.