TY  - RPRT
TI  - Epidemiologic evidence and causal inference.
AU  - D L Weed
PY  - 2000
DO  - 10.1016/s0889-8588(05)70312-9
UR  - https://pubmed.ncbi.nlm.nih.gov/10949774/
ID  - 10949774
ER  -