title: Is it safe in numbers?
authors.affiliation: Centre for Transport Studies, UCL, London, UK.
authors.forename: Nicola
authors.initials: N
authors.lastname: Christie
authors.affiliation: Department of Pediatrics, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
authors.forename: Ian
authors.initials: I
authors.lastname: Pike
mesh_terms: D000063:Accidents, Traffic / Q000706:statistics & numerical data*; D001642:Bicycling / Q000293:injuries / Q000706:statistics & numerical data*; D006801:Humans; D012449:Safety; D016138:Walking / Q000293:injuries / Q000706:statistics & numerical data*