1. Centers for Diseases Control and Prevention, Antibiotic Resistance, CDC website (www.cdc.gov/ncidod/dbmd/antibioticresistance)
2. European Federation of Animal Health (FEDESA). Antibiotics and Animals, FEDESA/FEFANA Press Release, 8. Sept. 1997. Brussels, Belgium
3. European Federation of Animal Health (FEDESA). Antibiotics Use in Farm Animals does not threaten Human Health. FEDESA/FEFANA Press Release, 13. July.2001. Brussels, Belgium
4. Union of Concerned Scientists. 70 Percent of All Antibiotics Given to Healthy Livestock. Press Release. 8 January, 2001, Cambridge, US
5. Antimicrobial resistance: priorities for action;Wise;J Antimicrob Chemother,2001