If a research study looks at the effects of zinc on the immune system by dividing participants into 2 groups and giving one g

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If a research study looks at the effects of zinc on the immune system by dividing participants into 2 groups and giving one group a supplement of zinc and the other group a placebo every day for 3 months, what type of study is this? intervention study laboratory study O epidemiology study case study 1 points Save Answer
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