Barbara A. Israel is professor of health behavior and health education in the School of Public Health at the University of Michigan.

Eugenia Eng is professor of health behavior and health education in the School of Public Health at the University of North Carolina at Chapel Hill.

Amy J. Schulz is research associate professor of health behavior and health education at the University of Michigan School of Public Health.

Edith A. Parker is associate professor of health behavior and health education at the University of Michigan School of Public Health.