From the *Annenberg Public Policy Center, University of Pennsylvania, Philadelphia; †Bradley/Hasbro Research Center, Rhode Island Hospital, Providence, Rhode Island; ‡Rollins School of Public Health, Emory University, Atlanta, Georgia; §Arnold School of Public Health, University of South Carolina, Columbia, South Carolina; ∥Department of Psychology and Center for Health and Behavior, Syracuse University, Syracuse, New York; ¶Center for Health and Behavior, Syracuse University, Syracuse, New York; and #Department of Pediatrics, Wayne State University, Children’s Hospital of Michigan, Detroit, Michigan
This study was conducted through the iMPPACS network supported by the National Institutes of Mental Health (Pim Brouwers, Project Officer) at the following sites and local contributors: Columbia, SC (U01 MH66802; Robert F. Valois (PI), Naomi B. Farber, Andre Walker); Macon, GA (MH066807; Ralph DiClemente (PI), Gina M. Wingood, Laura F. Salazar, Rachel Joseph Nash, Pamela J. Fleischauer; Philadelphia, PA (U01-MH066809; Daniel Romer (PI), Michael Hennessey, Bonita Stanton, Jennifer Horner, Sharon R. Sznitman); and Providence, RI (U01-MH-066785; Larry K. Brown (PI); Syracuse, NY (U01-MH-66794; Peter A. Vanable (PI), Michael P. Carey, Rebecca Bostwick).
Correspondence: Sharon R. Sznitman, PhD, Adolescent Risk Communication Institute, Annenberg Public Policy Center, University of Pennsylvania, 3535 Market Street, Suite 550, Philadelphia, PA 19104. E-mail: email@example.com.
Received for publication May 30, 2008, and accepted October 3, 2008.