[1]
Sousa, C.A. de et al. 2011. Prevalence of chronic obstructive pulmonary disease and risk factors in São Paulo, Brazil, 2008-2009 . Revista de Saúde Pública. 45, 5 (Oct. 2011), 887–896. DOI:https://doi.org/10.1590/S0034-89102011005000051.