TY  - RPRT
TI  - Does vaccination help to spread smallpox?
AU  - C K MILLARD
PY  - 1951
DO  - 10.1016/s0140-6736(51)91189-0
UR  - https://pubmed.ncbi.nlm.nih.gov/14795779/
ID  - 14795779
ER  -