TY  - RPRT
TI  - Indications for smallpox vaccination: policies still differ.
AU  - D Baxby
PY  - 1993
DO  - 10.1016/0264-410x(93)90277-5
UR  - https://pubmed.ncbi.nlm.nih.gov/8470422/
ID  - 8470422
ER  -