Ribeiro, Ana Isabel, Elias Teixeira Krainski, Marilia Sá Carvalho, and Maria de Fátima de Pina. “The Influence of Socioeconomic Deprivation, Access to Healthcare and Physical Environment on Old-Age Survival in Portugal”. Geospatial Health 12, no. 2 (November 7, 2017). Accessed January 18, 2021. https://geospatialhealth.net/index.php/gh/article/view/581.