title: Analysis did not account for cluster randomisation.
authors.forename: G
authors.initials: G
authors.lastname: Maclennan
authors.forename: C
authors.initials: C
authors.lastname: Ramsay
authors.forename: J M
authors.initials: JM
authors.lastname: Grimshaw
authors.forename: M K
authors.initials: MK
authors.lastname: Campbell
mesh_terms: D000818:Animals; D001733:Bites and Stings / Q000517:prevention & control*; D002648:Child; D016000:Cluster Analysis; D004285:Dogs; D006801:Humans; D016032:Randomized Controlled Trials as Topic