1. Microbiology Research Division, Bureau of Microbial Hazards, Food Directorate, Health Products and Food Branch, Sir Frederick G. Banting Research Centre, 251 Sir Frederick G. Banting Driveway Research Centre, Tunney's Pasture, P. L. 2204A2, Ottawa, Ontario K1A 0K9, Canada
2. Laboratory of Microbiology (WE10V), Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
3. Nutrition Research Division, Bureau of Nutrition Sciences, Food Directorate, Health Products and Food Branch, Sir Frederick G. Banting Research Centre, 251 Sir Frederick G. Banting Driveway Research Centre, Tunney's Pasture, P. L. 2204A2, Ottawa, Ontario K1A 0K9, Canada