1. Centre for Inflammation Research, Institute for Regeneration and Repair, The University of Edinburgh , Edinburgh , United Kingdom
2. Medical Microbiology, Royal Infirmary of Edinburgh , Edinburgh , United Kingdom
3. Clinical Infection Research Group, Western General Hospital , Edinburgh , United Kingdom
4. Edinburgh Medical School, The University of Edinburgh , Edinburgh , United Kingdom
5. Scottish Microbiology Reference Laboratory, New Lister Building , Glasgow , United Kingdom
6. College of Medical, Veterinary & Life Sciences, Glasgow Dental Hospital & School, University of Glasgow , Glasgow , United Kingdom
7. Division of Infectious Diseases and International Health, Department of Medicine, Duke University School of Medicine , Durham, North Carolina , USA
8. Duke Clinical Research Institute , Durham, North Carolina , USA