TY  - RPRT
TI  - Epidemiologic methods in immunization programs.
AU  - R T Chen
AU  - W A Orenstein
PY  - 1996
DO  - 10.1093/oxfordjournals.epirev.a017931
UR  - https://pubmed.ncbi.nlm.nih.gov/9021306/
ID  - 9021306
ER  -