A Century of Vaccination: Small-Pox Epidemics and Small-Pox Mortality before and since Vaccination Came into Use
- PMID: 20760348
- PMCID: PMC2401272
- DOI: 10.1136/bmj.2.2166.27
A Century of Vaccination: Small-Pox Epidemics and Small-Pox Mortality before and since Vaccination Came into Use
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