@article{article897740d8, title = {Upper respiratory symptoms associated with aging of the ventilation system in arificially ventilated offices in São Paulo, Brazil}, author = {Graudenz, Gustavo S and Kalil, Jorge and Saldiva, Paulo Hilário Nascimento and Gambale, Walderez and Latorre, Maria do Rosário Dias de Oliveira}, year = {2002}, journal = {Chest Journal} }