TY  - RPRT
TI  - Recertification--by examination or by CEU?
AU  - C R McFarland
PY  - 1990
DO  - 10.1016/0196-6553(90)90188-x
UR  - https://pubmed.ncbi.nlm.nih.gov/2363543/
ID  - 2363543
ER  -