1. NIZO Food Research, PO Box 20, 6710 BA Ede, The Netherlands
2. TI Food and Nutrition, PO Box 557, 6700 AN Wageningen, The Netherlands
3. Radboud University Nijmegen Medical Centre/NCMLS, Centre for Molecular and Biomolecular Informatics, PO Box 9101, 6500 HB Nijmegen, The Netherlands
4. Wageningen University, Laboratory of Microbiology, PO Box 8033, 6700 EJ Wageningen, The Netherlands