1. University of Alabama at Birmingham
2. Leiden University Medical Center, Leiden, The Netherlands
3. Crescendo Bioscience, South San Francisco, California
4. Oklahoma Medical Research Foundation, Oklahoma City
5. Brigham and Women's Hospital, Boston, Massachusetts
6. Rheumatology Associates of Long Island, Melville, New York
7. University of Texas Southwestern Medical Center, Dallas
8. Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada