Miranda, M.J. de et al. 2014. Spatial association between socioeconomic variables and risk related to pre-term births in metropolitan region of Sao Paulo (MRSP) and Lisbon metropolitan area (AML). Saúde e Sociedade. 23, 4 (Dec. 2014), 1142–1153. DOI:https://doi.org/10.1590/S0104-12902014000400002.