Question: 4.In a study to identify risk factors for multiple sclerosis (MS), researchers use hospital records to identify 25 people with MS and 25 people without

4.In a study to identify risk factors for multiple sclerosis (MS), researchers use hospital records to identify 25 people with MS and 25 people without MS then interview them about childhood exposures to pesticides and other chemicals. What type of study is this? In a study to identify risk factors for multiple sclerosis (MS), researchers use hospital records to identify 25 people with MS and 25 people without MS then interview them about childhood exposures to pesticides and other chemicals. What type of study is this? Cross-sectional Prospective cohort Case-control Randomized controlled trial

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