1. Department of Psychiatry and Behavioral Sciences University of California, San Francisco San Francisco California USA
2. Annenberg School for Communication University of Pennsylvania Philadelphia Pennsylvania USA
3. Department of Bioengineering, School of Engineering and Applied Science University of Pennsylvania Philadelphia Pennsylvania USA
4. Leonard Davis Institute of Health Economics University of Pennsylvania Philadelphia Pennsylvania USA
5. Department of Psychology The Pennsylvania State University University Park Pennsylvania USA
6. Department of Psychology University of Southern California Los Angeles California USA
7. Department of Human Development and Family Studies, and Edna Bennett Pierce Prevention Research Center The Pennsylvania State University University Park Pennsylvania USA