TY  - RPRT
TI  - Small area analysis shows differences in utilization.
AU  - S L Richardson
AU  - K K Renz
AU  - T T Vogel
AU  - J E Graham
AU  - J Kaufman
PY  - 1991
DO  - 10.1177/0885713x9100600306
UR  - https://pubmed.ncbi.nlm.nih.gov/1824450/
ID  - 1824450
ER  -