TY  - RPRT
TI  - Operational quality assurance: a new concept defined.
AU  - R Frazer
PY  - 1991
DO  - 10.1016/s1046-9095(05)80594-x
UR  - https://pubmed.ncbi.nlm.nih.gov/10109729/
ID  - 10109729
ER  -