@article{papanna_vittaldas_thirugnanam_srinivasa_2021,  title={EPIDURAL STEROID INJECTION IN HERNIATED DISC AND LUMBAR CANAL STENOSIS: IS IT JUST A PLACEBO?},  volume={20},  ISSN={1808-1851},  url={https://doi.org/10.1590/S1808-185120212003241111},  DOI={10.1590/S1808-185120212003241111},  number={3},  journal={Coluna/Columna},  publisher={Sociedade Brasileira de Coluna},  author={PAPANNA, AJAY KUMAR SHETTY and VITTALDAS, SUJITH RAO and THIRUGNANAM, BALAMURUGAN and SRINIVASA, VIDYADHARA},  year={2021},  month={Jul},  pages={189–191} }