1. Division of Rheumatology Mayo Clinic Rochester MN USA
2. Department of Medicine University of Maryland Medical Center, Midtown Campus Baltimore MD USA
3. Division of Pediatric Rheumatology, Department of Pediatric and Adolescent Medicine Mayo Clinic Rochester MN USA
4. Department of Quantitative Health Sciences Mayo Clinic Rochester MN USA
5. Division of Population Health National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention Atlanta GA USA
6. Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery Mayo Clinic Rochester Minnesota USA