Farm practices to control E. coli O157 in young cattle - A randomised controlled trial Johanne Ellis-Iversen, Richard P. Smith, Steven Van Winden, Giles A. Paiba, Eamon Watson, Lucy C. Snow and Alasdair J.C. Cook Vet. Res., 39 1 (2008) 03 Published online: 26 October 2007 DOI: 10.1051/vetres:2007041