@article{gupta2024-03638dde,
  author  = {Gupta, Ravi and Fein, Jay and Newhouse, Joseph P and Schwartz, Aaron L},
  title   = {{Comparison of prior authorization across insurers: cross sectional evidence from Medicare Advantage}},
  journal = {BMJ},
  year    = {2024},
  doi     = {10.1136/bmj-2023-077797},
  url     = {https://doi.org/10.1136/bmj-2023-077797}
}