title: [Meta-analyses--several explanations, illustrated using an example].
authors.affiliation: Clinique de Médecine 2, HUG Genève.
authors.forename: M
authors.initials: M
authors.lastname: Schneider
authors.forename: M R
authors.initials: MR
authors.lastname: Tramèr
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D015201:Meta-Analysis as Topic; D015337:Multicenter Studies as Topic