@misc{indiciaeb729888d5b94,
  title = {FIRST AID: a design philosophy and a program for on-line symptom processing.},
  author = {D C Barber and J Fox},
  year = {1981},
  doi = {10.1016/0020-7101(81)90014-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/7019104/},
  note = {Source identifier: 7019104}
}