1. Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, USA
2. School of Communication and Information, Rutgers the State University of New Jersey, New Brunswick, NJ, USA
3. Department of Advertising & PR, College of Communication Arts and Sciences, Michigan State University, Lansing, MI, USA
4. Division of Epidemiology & Community Health, University of Minnesota, Minneapolis, MN, USA
5. Philadelphia Department of Public Health, Philadelphia, PA, USA
6. Perelman School of Medicine and School of Nursing, University of Pennsylvania, Philadelphia, PA, USA