TY  - RPRT
TI  - Managed care: update and future directions.
AU  - C W Bell
AU  - B E Lewis
AU  - M O Zelley
PY  - 1990
DO  - 10.1097/00004479-199005000-00005
UR  - https://pubmed.ncbi.nlm.nih.gov/10106521/
ID  - 10106521
ER  -