1. Microbiology and Immunobiology, The Queen's University of Belfast, Grosvenor Road, Belfast BT12 6BN, UK
2. The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK
3. Biology and Biochemistry, The Queen's University of Belfast, Grosvenor Road, Belfast BT12 6BN, UK
4. Food Science, The Queen's University of Belfast, Grosvenor Road, Belfast BT12 6BN, UK
5. Institute of Cell and Molecular Biology, The University of Edinburgh, Darwin Building, King's Buildings, Edinburgh EH9 3JR, UK