1. Department of Health Behavior and Health Education, Fay W. Boozman College of Public Health University of Arkansas for Medical Sciences Little Rock Arkansas USA
2. RAND Santa Monica California USA
3. Department of Internal Medicine, Community Health and Research, College of Medicine University of Arkansas for Medical Sciences Fayetteville Arkansas USA
4. Department of Epidemiology, Fay W. Boozman College of Public Health University of Arkansas for Medical Sciences Little Rock Arkansas USA
5. Department of Health Policy and Management, Fay W. Boozman College of Public Health University of Arkansas for Medical Sciences Little Rock Arkansas USA