1. Brigham and Women's Hospital Boston Massachusetts
2. Glasgow Biomedical Research Centre Glasgow UK
3. Center for Rheumatology Albany New York
4. Universidad de Chile and Hospital San Juan de Dios Santiago Chile
5. Institute of Rheumatology Charles University Prague Czech Republic
6. MedImmune Gaithersburg Maryland
7. MedImmune Cambridge UK
8. Charité–University Medicine Berlin Free University of Berlin, and Humboldt University of Berlin Berlin Germany