@misc{indiciaecbcdc2b09b71,
  title = {Physicians poor at prevalence and positive predictive value.},
  author = {P R Billings and M S Bernstein},
  year = {1985},
  url = {https://pubmed.ncbi.nlm.nih.gov/4021056/},
  note = {Source identifier: 4021056}
}