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Robert M. Lewert, Donald R. Hopkins, and Samuel Mandlowitz
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Donald R. Hopkins, Ernesto Ruiz-Tiben, and Trenton K. Ruebush
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Smallpox in Sierra Leone

II. The 1968–69 Eradication Program

Donald R. Hopkins, J. Michael Lane, Evelyn C. Cummings, James N. Thornton, and J. Donald Millar
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Smallpox in Sierra Leone

I. Epidemiology

Donald R. Hopkins, J. Michael Lane, Evelyn C. Cummings, and J. Donald Millar
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Donald R. Hopkins, Ernesto Ruiz-Tiben, Robert L. Kaiser, Andrew N. Agle, and P. Craig Withers, Jr
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DONALD R. HOPKINS, ERNESTO RUIZ-TIBEN, PHILIP DOWNS, P. CRAIG WITHERS JR., and JAMES H. MAGUIRE
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Donald R. Hopkins, Ernesto Ruiz-Tiben, Trenton Ruebush II, Andrew N. Agle, and P. Craig Withers Jr
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Donald R. Hopkins, Ernesto Ruiz-Tiben, Philip Downs, P. Craig Withers Jr., and Sharon Roy
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Donald R. Hopkins, Ernesto Ruiz-Tiben, Adam Weiss, P. Craig Withers Jr., Mark L. Eberhard, and Sharon L. Roy
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Adam J. Weiss, Torben Vestergaard Frandsen, Ernesto Ruiz-Tiben, Donald R. Hopkins, Franklin Aseidu-Bekoe, and David Agyemang
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