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The consequences for epidemiologic studies of misclassification in general are well established (Rothman and Greenland 1998)

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If you decide to join the study and are eligible, you will be given either a CBD-based medication or placebo to take every day, and will meet with clinical staff and researchers about once every 3 weeks over the 12-week treatment period, and again 12 weeks after treatment has stopped to see the longer term effects of the study

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