1. Department of Internal Medicine; VU University Medical Centre; Amsterdam; The Netherlands
2. VA Puget Sound Health Care System; University of Washington; Seattle; WA; USA
3. Oxford University Hospitals NHS Trust; Oxford; UK
4. University of Manitoba; Winnipeg; MB; Canada
5. University of Texas Southwestern Medical Center and Parkland Hospital; Dallas; TX; USA
6. Gustave Dron Hospital; Tourcoing; France
7. University Medical Centre; Ljubljana; Slovenia
8. IWGDF; Heemstede; The Netherlands
9. Nottingham University Hospitals Trust; Nottingham; UK