@article{mendoza-sassi_béria_barros_2003,  title={Outpatient health service utilization and associated factors: a population-based study},  volume={37},  ISSN={0034-8910},  url={https://doi.org/10.1590/S0034-89102003000300017},  DOI={10.1590/S0034-89102003000300017},  number={3},  journal={Revista de Saúde Pública},  publisher={Faculdade de Saúde Pública da Universidade de São Paulo},  author={Mendoza-Sassi, Raúl and Béria, Jorge U and Barros, Aluísio J D},  year={2003},  month={Jun},  pages={372–378} }