TY  - RPRT
TI  - Smallpox ten years gone: what next?
AU  - N D Noah
AU  - N T Begg
PY  - 1987
DO  - 10.1136/bmj.295.6605.1013
UR  - https://pubmed.ncbi.nlm.nih.gov/3120850/
ID  - 3120850
ER  -