Investigator-initiated versus industry-sponsored trials – visibility and relevance of randomized controlled trials in clinical practice guidelines (IMPACT) by Manuel Hecht, Anette Blümle, Harald Binder, Martin Schumacher, Nadine Binder

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How Much Participant Outcome Data Is Missing from Sight: Findings from a Cohort of Trials Submitted to a German Research Ethics Committee. by Jamie J Kirkham, Kerry M Dwan, Anette Blümle, Erik von Elm, Paula R Williamson

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What is the added value of handsearching Hungarian medical journals and grey literature for identifying controlled clinical trials? Protocol for a meta-epidemiological study by Szimonetta Lohner, Anette Blümle, László Czina, Krisztina Horváthné Veres, Zsuzsanna Némethné Kontár, Edit Bőszné Murányi

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Systematic review finds that study data not published in full text articles have unclear impact on meta-analyses results in medical research. by Christine M Schmucker, Anette Blümle, Lisa K Schell, Guido Schwarzer, Patrick Oeller, Laura Cabrera, Erik von Elm, Matthias Briel, Joerg J Meerpohl, OPEN consortium

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