1. Palmer College of Chiropractic, Davenport, Iowa
2. Yale School of Medicine-Center for Medical Informatics, Yale University, New Haven, Connecticut
3. The University of Iowa, College of Public Health, Iowa City, Iowa
4. Yale Center for Medical Informatics, New Haven, Connecticut
5. VA Greater Los Angeles Healthcare System, Los Angeles, California
6. Minneapolis VA Health Care System, Minneapolis, Minnesota
7. Iowa City VA Health Care System, Iowa City, Iowa
8. The Dartmouth Institute for Health Policy & Clinical Practice, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
9. Duke University, Durham, North Carolina, USA