TY  - RPRT
TI  - Surveillance. Information for action.
AU  - W A Orenstein
AU  - R H Bernier
PY  - 1990
DO  - 10.1016/s0031-3955(16)36912-7
UR  - https://pubmed.ncbi.nlm.nih.gov/2190144/
ID  - 2190144
ER  -