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Journal of the American Dental Association (1939)|July 1, 1985
Acceptance of hepatitis B vaccine by Rhode Island dental practitionersJ A Yacovone, J Weisfeld
Bulletin of the World Health Organization|January 1, 1980
The world's last endemic case of smallpox: surveillance and containment measuresA Deria, Z Jezek, K Markvart, et al.
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