Oliveira Martins, Maria Rosário, et al. “Regional Trends in Ageing and Health for Portugal, 2011-2031”. Hygiea Internationalis: An Interdisciplinary Journal for the History of Public Health, vol. 12, no. 1, Feb. 2016, pp. 69-95, doi:10.3384/hygiea.1403-8668.1612169.