@article{joaquim_2013,  title={Spine surgery cost reduction at a specialized treatment center},  volume={11},  ISSN={1679-4508},  url={https://doi.org/10.1590/S1679-45082013000200024},  DOI={10.1590/S1679-45082013000200024},  number={2},  journal={einstein (São Paulo)},  publisher={Instituto Israelita de Ensino e Pesquisa Albert Einstein},  author={Joaquim, Andrei Fernandes},  year={2013},  month={Apr},  pages={265–265} }