TY  - RPRT
TI  - Practice variation and physician-specific effects.
AU  - Jostein Grytten
AU  - Rune Sørensen
PY  - 2003
DO  - 10.1016/s0167-6296(02)00105-4
UR  - https://pubmed.ncbi.nlm.nih.gov/12683959/
ID  - 12683959
ER  -