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Definition of Crossover study

Crossover study: A type of clinical trial in which the study subjects receive each treatment in a random order. With this type of study, every patient serves as his or her own control.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=2872
Last Editorial Review: 3/26/1998 2:24:00 PM

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