1. Internal Medicine Department, Hospital Moinhos de Vento, Porto Alegre, RS, Brazil;
2. Complexo Hospitalar Astrogildo de Azevedo, Santa Maria, RS, Brazil;, Hospital Universitário de Santa Maria, Santa Maria, RS, Brazil;
3. Intensive Care Unit, Grupo Hospitalar Conceição, Porto Alegre, RS, Brazil;
4. Tuberculosis Management Committee, Hospital de Clínicas de Porto Alegre, RS, Brazil.