TY  - RPRT
TI  - Accurate sampling in general practice waiting room surveys: methodological issues.
AU  - Marie Pirotta
AU  - Jane Gunn
AU  - Deidre Harrison
PY  - 2002
DO  - 10.1111/j.1467-842x.2002.tb00909.x
UR  - https://pubmed.ncbi.nlm.nih.gov/12054335/
ID  - 12054335
ER  -