| Dr. Michael Bigby MD | Beth Israel Deaconess Medical Center 330 Brookline Avenue Boston, MA, 02215 USA |
| Prof. Robert Stern MD | Beth Israel Deaconess Medical Center 330 Brookline Avenue Boston, MA, 02215 USA |
| Prof. Paul Peter Tak MD, PhD | Division of Clinical Immunology and Rheumatology EULAR & FOCIS Center of Excellence Academic Medical Center University of Amsterdam, F4-218 P.O. Box 22700 1100 DE Amsterdam, THE NETHERLANDS |