1. Department of Biological Sciences, Warwick University, Coventry CV4 7AL, United Kingdom
2. Cardiff School of Biosciences, Cardiff University, Cardiff CF10 3TL, United Kingdom
3. Department of Respiratory Medicine, Birmingham Heartlands Hospital, Birmingham, United Kingdom
4. Peter Medawar Building for Pathogen Research and Department of Zoology, University of Oxford, Oxford, United Kingdom
5. Department of Medical Microbiology, University of Edinburgh Medical School, Teviot Place, Edinburgh, Scotland, United Kingdom
6. Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
7. Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, 1150 W. Medical Center Drive, 8323 MRSB III, Box 0646, Ann Arbor, Michigan 48109-0646
8. Laboratorium voor Microbiologie, Universiteit Gent, Ledeganckstraat 35, B-9000 Ghent, Belgium