TY  - RPRT
TI  - Propensity scores: help or hype?
AU  - Wolfgang C Winkelmayer
AU  - Tobias Kurth
PY  - 2004
DO  - 10.1093/ndt/gfh104
UR  - https://pubmed.ncbi.nlm.nih.gov/15069182/
ID  - 15069182
ER  -