@misc{indiciae26e224c475b1,
  title = {Preferred provider organizations: performance, problems, and promise.},
  author = {J Gabel and D Ermann},
  year = {1985},
  doi = {10.1377/hlthaff.4.1.24},
  url = {https://pubmed.ncbi.nlm.nih.gov/3997045/},
  note = {Source identifier: 3997045}
}