TY  - RPRT
TI  - Health services research.
AU  - D M Chaput de Saintonge
AU  - R M Poses
PY  - 1993
DO  - 10.1136/bmj.306.6880.797-b
UR  - https://pubmed.ncbi.nlm.nih.gov/8490366/
ID  - 8490366
ER  -