@article{goldani_bettiol_barbieri_tomkins_2000,  title={Maternal age, social changes, and pregnancy outcome in Ribeirão Preto, southeast Brazil, in 1978-79 and 1994},  volume={16},  ISSN={0102-311X},  url={https://doi.org/10.1590/S0102-311X2000000400022},  DOI={10.1590/S0102-311X2000000400022},  number={4},  journal={Cadernos de Saúde Pública},  publisher={Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz},  author={Goldani, Marcelo Zubaran and Bettiol, Heloisa and Barbieri, Marco Antonio and Tomkins, Andrew},  year={2000},  month={Oct},  pages={1041–1047} }