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Clinical field studies are studies in which human volunteers (often referred to as participants) agree to participate in order to increase medical knowledge and develop potential drug treatments. In clinical field studies, participants receive a specialized intervention, either in the form of a drug or another treatment, in accordance with the protocols developed by researchers. These studies enable researchers to better understand how certain drugs or procedures affect an individual’s given phenotype, or physical state. Interventions can also test participants’ reactions to a specific behavior, such as changing their diets.

During clinical trials, newer medical approaches might be compared against ones that are already available. In some cases, some participants will be given a placebo with no active ingredients. This is designed to see if the ...

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