P. M. S. B. Francisco, M. R. Donalisio, M. B. de A. Barros, C. L. G. César, L. Carandina, and M. Goldbaum, “ Factors associated with pulmonary disease among the elderly ”, Rev. saúde pública, vol. 40, no. 3, pp. 428–435, Jun. 2006, doi: 10.1590/S0034-89102006000300010.