1. Postgraduation Program in Pulmonary Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
2. Infection Control Department, Santa Casa-Complexo Hospitalar, Porto Alegre, Brazil
3. Conselho Nacional de Desenvolvimento e Pesquisa (CNPq), Brasilia, Brazil
4. Mycology Laboratory, Santa Casa-Complexo Hospitalar, Porto Alegre, RS, Brazil