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Biology, 11.04.2020 04:02 yuoy

In 2018, a research group is interested in studying the relationship between exposure to a particular chemical and reproductive disorders. They identify a group of people who were exposed to contaminated drinking water during an incident in 1985 and another group who were never exposed. Then they examine medical records to see if those in the exposed group were more likely to develop reproductive disorders over the 30 years following their exposure. This is what type of study?

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