@misc{indiciae156f37a12bd3,
  title = {Please be specific.},
  author = {R A Schmidt and C E Metz},
  year = {1990},
  doi = {10.2214/ajr.154.5.2108557},
  url = {https://pubmed.ncbi.nlm.nih.gov/2108557/},
  note = {Source identifier: 2108557}
}