1. MOST-USDA Joint Research Center for Food Safety; School of Agriculture and Biology, and State Key Lab of Microbial Metabolism; Shanghai Jiao Tong Univ; Shanghai 200240 China
2. Molecular Characterization of Foodborne Pathogens Research Unit; Eastern Regional Research Center; Agricultural Research Service; U. S. Dept. of Agriculture; 600 East Mermaid Lane Wyndmoor PA 19038 U.S.A
3. Dept. of Food Science; Rutgers Univ; 65 Dudley Road New Brunswick NJ 08901-8520 U.S.A