1. Swedish animal welfare regulations and their impact on food animal production
2. Bass SE, Joshi SS, Nuttall D, etalAntibiotic resistance. Available at: www.molbio.princeton.edu/courses/mb427/2001/ projects/02/index.htm. Accessed Apr 4, 2004.
3. Mathews KH. Antimicrobial drug use and veterinary costs in US livestock production. Washington, DC: Economic Research Service/USDA, 2001;agricultural information bulletin No. 766.
4. AVMA. Judicious therapeutic use of antimicrobials for beef cattle veterinarians. Available at: www.avma.org/scienact/jtua/cattle/jtuabeef.asp. Accessed Sep 7, 2004.