title: Systematic reviews: when is an update an update?
authors.forename: J A
authors.initials: JA
authors.lastname: Muir Gray
authors.forename: Nicola
authors.initials: N
authors.lastname: Pearce-Smith
mesh_terms: D001943:Breast Neoplasms; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D017712:Peer Review, Research / Q000592:standards*; D011642:Publications