Authors: Nick D Carter; Karim M Khan; Heather A McKay; Moira A Petit; Constance Waterman; Ari Heinonen; Patti A Janssen; Meghan G Donaldson; Arthur Mallinson; Lenore Riddell; Karen Kruse; Jerilynn C Prior; Leon Flicker Journal: CMAJ Date: 2002-10-29 Impact factor: 8.262