TY  - RPRT
TI  - Strengthening national preparedness for smallpox: an update.
AU  - J W LeDuc
AU  - P B Jahrling
DO  - 10.3201/eid0701.700155
UR  - https://pubmed.ncbi.nlm.nih.gov/11266310/
ID  - 11266310
ER  -