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Bulletin of the Pan American Health Organization|June 1, 1996
Epidemic cholera in Latin America, 1991-1993: implications of case definitions used for public health surveillanceD Koo, H Traverso, M Libel, et al.
Bulletin of the World Health Organization|January 1, 1984
Inadequate immunity to measles in children vaccinated at an early age: effect of revaccinationF L Black, L L Berman, M Libel, et al.
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