1. Division of Epidemiology, Mayo Clinic, Rochester, Minnesota
2. Division of Health Care Delivery Research and Robert D. and Patricia E. Kern Center for Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota
3. Department of Family Medicine, Mayo Clinic, Rochester, Minnesota
4. Division of Epidemiology, Mayo Clinic, Scottsdale, Arizona
5. Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
6. Section of Cardiovascular Medicine, Yale University School of Medicine, New Haven, Connecticut
7. Flying Buttress Associates, Charlottesville, Virginia
8. Division of Community Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota
9. Division of Pediatric Infectious Diseases, Mayo Clinic, Rochester, Minnesota