title: Writing to authors of systematic reviews elicited further data in 17% of cases.
authors.forename: J
authors.initials: J
authors.lastname: McGrath
authors.forename: G
authors.initials: G
authors.lastname: Davies
authors.forename: K
authors.initials: K
authors.lastname: Soares
mesh_terms: D003625:Data Collection; D015201:Meta-Analysis as Topic; D016032:Randomized Controlled Trials as Topic