TY  - RPRT
TI  - Epidemiologic studies utilizing surveys: accounting for the sampling design.
AU  - E L Korn
AU  - B I Graubard
PY  - 1991
DO  - 10.2105/ajph.81.9.1166
UR  - https://pubmed.ncbi.nlm.nih.gov/1951829/
ID  - 1951829
ER  -