Full title (Editorial Board)

PREVENTIVE VETERINARY MEDICINE An international journal on research and development in veterinary epidemiology, animal disease prevention and control, and animal health economics

EDITOR-IN-CHIEF: H.N. Erb, Clinical Sciences, New York State College of Veterinary Medicine, Cornell University, Ithaca, NY 14853-6401, USA

ASSOCIATE EDITORS: L. Alban, Kjellerup, Denmark; M.G. Doherr, Bern, Switzerland; I. Dohoo, Charlottetown, P.E.I, Canada; U. Emanuelson, Uppsala, Sweden; S.W. Martin, Guelph, Ontario, Canada; Y.H. Schukken, Ithaca, NY, USA EDITORIAL ADVISORY BOARD: H. Allore, New Haven, USA A.M. Al-Majali, Irbid, Jordan K.A. Anaman, Bandar Seri Begawan, Brunei L. Audige´, Dubendorf, Switzerland H.W. Barkema, Charlottetown, P.E.I, Canada J. Barnouin, St. Genes Champanelle, France T.B. Farver, Davis, CA, USA K. Frankena, Wageningen, The Netherlands I.A. Gardner, Davis, CA, USA S.K. Hietala, Davis, CA, USA D.W. Hird, Davis, CA, USA M. Hugh-Jones, Baton Rouge, LA, USA L.L. Hungerford, Clay Center, NE, USA A. Lindberg, Uppsala, Sweden

S.A McEwen, Guelph, Ont., Canada T.A. Martinez, Hatfied, UK N.R. Perkins, Toowoomba, QLD, Australia S.W.J. Reid, Glasgow, UK M. Salman, Fort Collins, CO, USA K.A. Schat, Ithaca, NY, USA D.T. Scholl, Saint-Hyacinthe, Canada M.R. Slater, College Station, TX, USA B.D. Slenning, Raleigh, NC, USA P.B. Spradbrow, Brisbane, Australia H. Stege, Roarsvej, Denmark M.P. Ward, West Lafayette, IN, USA R.M. Weigel, Urbana, IL, USA S. Wells, St. Paul, MN, USA

VOLUME 68 (2005) Amsterdam  Boston  Jena  London  New York  Oxford  Paris  Philadelphia  San Diego  St. Louis

doi:10.1016/S0167-5877(05)00082-6