1. Less is more: Opposition to antibiotics grows;Shane;Poultry,2001
2. Antimicrobial debate far from complete;Norton;Feedstuffs,2000
3. Livestock drugs: More questions than answers?;Matthew;USDA/ERS Agric. Outlook,2001
4. Poultry industry quietly cuts back on antibiotic use;Burros;New York Times,2002