@article{joaquim_sansur_hamilton_shaffrey_2009,  title={Degenerative lumbar stenosis: update},  volume={67},  ISSN={0004-282X},  url={https://doi.org/10.1590/S0004-282X2009000300039},  DOI={10.1590/S0004-282X2009000300039},  number={2b},  journal={Arquivos de Neuro-Psiquiatria},  publisher={Academia Brasileira de Neurologia - ABNEURO},  author={Joaquim, Andrei F. and Sansur, Charles A. and Hamilton, David K. and Shaffrey, Christopher I.},  year={2009},  month={Jun},  pages={553–558} }