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2. Searching for unpublished trials in Cochrane reviews may not be worth the effort. van Driel ML; De Sutter A; De Maeseneer J; Christiaens T J Clin Epidemiol; 2009 Aug; 62(8):838-844.e3. PubMed ID: 19128939 [TBL] [Abstract][Full Text] [Related]
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