1. Manchester Family Health Center, 57 Webster Street, Suite 110, Manchester, NH 03104
2. Department of Preventive Medicine and Biometrics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814
3. University of Vermont Department of Family Practice, College of Medicine, 235 Rowell Street, Burlington, VT 05405
4. Department of Military and Emergency Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814