TY  - RPRT
TI  - The pyramid for quality assurance.
AU  - D M Nadzam
AU  - M Atkins
PY  - 1987
DO  - 10.1097/00001786-198711000-00004
UR  - https://pubmed.ncbi.nlm.nih.gov/3680452/
ID  - 3680452
ER  -