1. Department of General Dentistry; Boston University Henry M. Goldman School of Dental Medicine; Boston MA USA
2. Center for Health Quality; Outcomes and Economic Research at Edith Nourse Rogers Memorial Veterans Hospital; Bedford MA USA
3. Veterans Healthcare System of the Ozarks; Fayetteville AR USA
4. Department of Veterans Affairs; VHACO Office of Dentistry; Washington DC USA
5. Department of Health Policy and Health Services Research; Boston University Henry M. Goldman School of Dental Medicine; Boston MA USA
6. VA San Diego Health Care System; San Diego CA USA