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(Columbia University's Mailman School of Public Health) Low- and middle-income countries such as Brazil face a lack of epidemiological data, and one of the key priorities for researchers is developing high-quality surveys. Investigators at Columbia University's Mailman School of Public Health with collaborators at the Federal University of São Paulo studied the difficulties in conducting a longitudinal epidemiological survey in a school-based sample in Brazil.
Original Article: Why is conducting research in some countries so difficult?NEXT ARTICLE
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