TY  - RPRT
TI  - Area variations in selected Medicare procedures.
AU  - J Holahan
AU  - R A Berenson
AU  - P G Kachavos
PY  - 1990
DO  - 10.1377/hlthaff.9.4.166
UR  - https://pubmed.ncbi.nlm.nih.gov/2289753/
ID  - 2289753
ER  -