Authors: Paul J Mellor; Sean Haugland; Sue Murphy; Ken C Smith; Andrew Holloway; Joy Archer; Roger M Powell; Gerry A Polton; Severine Tasker; David McCormick; Michelle E Tempest; Pauline E McNeil; Timothy J Scase; Chris D Knott; Ugo Bonfanti; Elizabeth J Villiers; David J Argyle; Michael E Herrtage; Michael J Day Journal: J Vet Intern Med Date: 2006 Nov-Dec Impact factor: 3.333