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Cita Chicago Style (17a ed.)Centers for Disease Control (U.S.). Epidemiology Program Office y Centers for Disease Control and Prevention (U.S.). Epidemiology Program Office. Morbidity and Mortality Weekly Report: MMWR. Atlanta, Ga.: U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control, Epidemiology Program Office, 1989.
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