1. Department of Biotechnology, Ghent University, Valentin Vaerwyckweg 1, 9000 Gent, Belgium.
2. Department of Biosystems, KU Leuven, Kasteelpark Arenberg 21, 3001 Leuven, Belgium.
3. Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium.
4. Dairy Research Institute of Asturias, Spanish National Research Council (IPLA-CSIC), Paseo Río Linares, s/n, 33300 Villaviciosa, Asturias, Spain.
5. Department of Microbial and Molecular Systems, KU Leuven, Kasteelpark Arenberg 23, 3001 Leuven, Belgium.
6. Institute of Biology Leiden, Leiden University, Sylviusweg 72, 2333 Leiden, Netherlands.