1. Departments of Medicine and Pathology, University of Utah School of Medicine, Salt Lake City, Utah
2. ARUP Laboratories, Salt Lake City, Utah
3. Hospital Clinic Institut d'Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona, Barcelona, Spain
4. University Medical Center of Besançon, Besançon, France
5. Duke University Medical Center
6. Barwon Health, Geelong, Australia
7. University Hospital for Infectious Disease, Zagreb, Croatia
8. Hospital General Universitario Gregorio Marañón, Madrid, Spain
9. Veterans Administration Medical Center, Ann Arbor, Michigan
10. Attikon University General Hospital, Athens, Greece
11. Flinders Medical Centre, Adelaide, Australia
12. The University of South Wales, Sydney, Australia
13. Southern Health, Clayton, Australia
14. Middlemore Hospital, Auckland, New Zealand
15. Ospedali Riuniti di Bergamo, Bergamo, Italy
16. Auckland City Hospital, Auckland, New Zealand
17. South Eastern Sydney and Illawarra Area Health Service, Australia
18. CHU Nancy-Brabois, Nancy, France
19. Second University of Naples, Naples, Italy
20. Medical University of South Carolina, Charleston, South Carolina
21. University of Otago, Christchurch, New Zealand
22. Veterans Administration Medical Center, Durham, North Carolina