TY  - RPRT
TI  - Understanding biased selection in Medicare HMOs.
AU  - Michelle M Mello
AU  - Sally C Stearns
AU  - Edward C Norton
AU  - Thomas C Ricketts
PY  - 2003
DO  - 10.1111/1475-6773.00156
UR  - https://pubmed.ncbi.nlm.nih.gov/12822921/
ID  - 12822921
ER  -