1. Center for Meat Safety & Quality, Department of Animal Sciences; Colorado State University; Fort Collins CO 80523
2. Department of Food Science & Technology; Virginia Polytechnic Institute and State University; Blacksburg VA 24061
3. Agricultural University of Athens, Laboratory of Microbiology & Biotechnology of Foods; 75 Iera Odos Athens 11855 Greece
4. Department of Food Science; University of Arkansas; Fayetteville AR 72701