[1] Section of General Internal Medicine, Department of Medicine, University of Chicago, IL
[2] Department of Health Studies, University of Chicago, IL
[3] Diabetes Research and Training Center, University of Chicago, IL
[4] National Opinion Research Center, Chicago, IL
[5] University of Evansville, Evansville, IN
[6] University of North Dakota College of Nursing, Grand Forks
[7] Migrant Health Services Inc., Moorhead, MN
[8] University of Washington, School of Public Health and Community Medicine, Seattle
[9] Medical College of Wisconsin, Milwaukee
[10] Berk and Associates, Seattle, WA
[11] Section of General Internal Medicine, University of Chicago, MC 2007, Chicago, IL 60637