1. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
2. Integrated Research & Development Laboratory, Marshfield Clinic Research Institute, Marshfield, Wisconsin, USA
3. Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, Arizona, USA
4. Baylor Scott and White Health, Temple, Texas, USA
5. Texas A&M University College of Medicine, Temple, Texas, USA
6. Division of Public Health, Department of Family and Preventive Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
7. Division of Child and Adolescent Health, Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
8. Department of Population and Family Health, Mailman School of Public Health, Columbia University Irving Medical Center, New York, New York, USA
9. St. Luke’s Regional Health Care System, Duluth, Minnesota, USA
10. Kaiser Permanente Northwest Center for Health Research, Portland, Oregon, USA
11. Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
12. Abt Associates, Inc., Cambridge, Massachusetts, USA
13. The Whiteside Institute for Clinical Research, Duluth, Minnesota, USA