1. Stanford University, Palo Alto, California
2. Centro Medico De Las Americas, Merida, Mexico
3. Instituto De Ginecologia Y Reproduccion, Lima, Peru
4. Organización Médica de Investigación, Buenos Aires, Argentina
5. Pontificial Catholic University School of Medicine, Porto Alegre, Brazil
6. Physician Research Collaboration, Lincoln, Nebraska
7. University of Queensland, Brisbane, Queensland, Australia
8. Centro De Especialidades Médicas/HRAEPY, Merida, Mexico
9. Poznanski Osrodek Medyczny Novamed, Poznań, Poland
10. Box Arthritis and Rheumatology of the Carolinas, Charlotte, North Carolina
11. Low Country Rheumatology, Charleston, South Carolina
12. Institute of Rheumatology, Moscow, Russia
13. Cliniques Universitaires Saint‐Luc and Université Catholique de Louvain, Brussels, Belgium
14. Bristol‐Myers Squibb, Princeton, New Jersey
15. Schlosspark‐Klinik, Teaching Hospital of the Charité University Medicine Berlin, Berlin, Germany