Geographical information systems in health research and services delivery in the Philippines. Geospatial Health, [S. l.], v. 1, n. 2, p. 147–155, 2007. DOI: 10.4081/gh.2007.263. Disponível em: https://www.geospatialhealth.net/gh/article/view/263. Acesso em: 21 jun. 2025.