@article{laurell_2016,  title={Competing health policies: insurance against universal public systems},  volume={24},  ISSN={0104-1169},  url={https://doi.org/10.1590/1518-8345.1074.2668},  DOI={10.1590/1518-8345.1074.2668},  journal={Revista Latino-Americana de Enfermagem},  publisher={Escola de Enfermagem de Ribeirão Preto / Universidade de São Paulo},  author={Laurell, Asa Ebba Cristina},  year={2016},  pages={e2668} }