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The Free Online English Dictionary from Macmillan Publishers.

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MEASURE DHS assists developing countries worldwide in the collection and use of data to monitor and evaluate population, health, and nutrition programs. The DHS program provides assistance with the Demographic and Health Survey, the Service Provision...

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Wordnik: Dictionary Definitions and Example Sentences

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PLoS ONE: an inclusive, peer-reviewed, open-access resource from the PUBLIC LIBRARY OF SCIENCE. Reports of well-performed scientific studies from all disciplines freely available to the whole world.

CDC Centers for Disease Control and Prevention - Your Online Source for Credible Health Information

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The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND focuses on the issues that matter most such as health, education, national security, international affairs, law and busin...