1. Division of Rheumatology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
2. Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
3. Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
4. Benaroya Research Institute, Seattle, WA 98101, USA.
5. Division of Infectious Disease, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.