TY  - RPRT
TI  - The case for causal reasoning.
AU  - J P Kassirer
AU  - R I Kopelman
PY  - 1987
DO  - 10.1080/21548331.1987.11707668
UR  - https://pubmed.ncbi.nlm.nih.gov/2846598/
ID  - 2846598
ER  -