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The Elimination of Urban Yellow Fever in the Americas Through the Eradication of Aedes aegypti Fred L. SoperM.D.Dr.P.H.F.A.P.H.A. CopyRightAt the time of this study, Dr. Soper was visiting scientist with the National Heart Institute, National Institutes of Health, Bethesda, Md., on assignment as director, Pakistan-SEATO Cholera Research Laboratory, Dacca, East Paksitan. https://doi.org/10.2105/AJPH.53.1.7 Published Online: October 03, 2011
Fred L. Soper (Tue,) studied this question.