TY  - RPRT
TI  - Controversial E & M coding guidelines deferred.
AU  - R D'Ambrosia
PY  - 1998
DO  - 10.3928/0147-7447-19980801-07
UR  - https://pubmed.ncbi.nlm.nih.gov/9731666/
ID  - 9731666
ER  -