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Non-randomized studies as a source of complementary, sequential or replacement evidence for randomized controlled trials in systematic reviews on the effects of interventions

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Description scientific article published on March 2013
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author: Mark Helfand  Beverley Shea  George Wells  Nancy Santesso  Holger Jens Schünemann  Peter Tugwell  Barnaby C Reeves  Elie A Akl 

Publication date March 1, 2013
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