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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Perkins F. T. Vaccination against whooping-cough. Br Med J. 1969 Nov 15;4(5680):429–430. doi: 10.1136/bmj.4.5680.429. [DOI] [PMC free article] [PubMed] [Google Scholar]
