TY  - RPRT
TI  - FIRST AID: a design philosophy and a program for on-line symptom processing.
AU  - D C Barber
AU  - J Fox
PY  - 1981
DO  - 10.1016/0020-7101(81)90014-3
UR  - https://pubmed.ncbi.nlm.nih.gov/7019104/
ID  - 7019104
ER  -