1. Rheumatology The University of Vermont Medical Center Burlington VT USA
2. Department of Internal Medicine University of Iowa Hospitals and Clinics Iowa City IA USA
3. Northern Colorado Hospitalists Fort Collins CO USA
4. Division of Nephrology Department of Internal Medicine University of Iowa Hospitals and Clinics Iowa City IA USA
5. Division of Immunology Department of Internal Medicine University of Iowa Hospitals and Clinics Iowa City IA USA
6. Division of Rheumatology Department of Internal Medicine University of Washington Seattle WA USA