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Which of the following decreases the reliability of results from a clinical trial? A. An obsolete medical treatment B. A double-blind technique C. A short observation period D. A voluntary enrollment plan
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Dec 11, 2017
Biology
high-school
5
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98.4k
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One paragraph explaining the events leading up to the Boston Massacre
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Oct 18, 2017
History
middle-school
5
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138k
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