TY  - RPRT
TI  - Managed care. Evolution and distinguishing features.
AU  - J T Frakes
PY  - 1997
DO  - 10.1016/s0889-8553(05)70326-5
UR  - https://pubmed.ncbi.nlm.nih.gov/9439948/
ID  - 9439948
ER  -