Andrea Carlson Gielen Editor

Andrea Carlson Gielen, Sc.D., Sc.M,, is professor and director, Center for Injury Research and Policy, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University.

David Sleet, Ph.D., F.A.A.H.B., is associate director for science, Division of Unintentional Injury Prevention, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, (CDC) in Atlanta, Georgia.

Ralph J. DiClemente, Ph.D., is Charles Howard Candler Professor, Department of Behavioral Sciences and Health Education, Rollins School of Public Health, Emory University.