title: Systematic reviews and meta-analyses: black boxes of medical literature?
authors.affiliation: Department of Cardiovascular Surgery, Heart Center, University of Freiburg, Freiburg, Germany claudia.heilmann@universitaets-herzzentrum.de.
authors.forename: Claudia
authors.initials: C
authors.lastname: Heilmann
authors.affiliation: Cochrane Germany, Medical Center-University of Freiburg, Freiburg, Germany.
authors.forename: Anette
authors.initials: A
authors.lastname: Blümle
mesh_terms: D019317:Evidence-Based Medicine / Q000379:methods / Q000592:standards; D006801:Humans; D015201:Meta-Analysis as Topic; D012196:Review Literature as Topic
keywords: Meta-analyses; Systematic reviews