TY  - RPRT
TI  - Prognostic models and the propensity score.
AU  - C Drake
AU  - L Fisher
PY  - 1995
DO  - 10.1093/ije/24.1.183
UR  - https://pubmed.ncbi.nlm.nih.gov/7797341/
ID  - 7797341
ER  -