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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Vella W. Smallpox vaccination. Br Med J. 1972 Aug 5;3(5822):353–353. doi: 10.1136/bmj.3.5822.353-b. [DOI] [PMC free article] [PubMed] [Google Scholar]
