TY  - RPRT
TI  - Regional professional foundations.
AU  - J E Wennberg
AU  - R Keller
PY  - 1994
DO  - 10.1377/hlthaff.13.1.257
UR  - https://pubmed.ncbi.nlm.nih.gov/8188144/
ID  - 8188144
ER  -