Published on in Vol 16, No 11 (2014): November
1 Penn Social Media and Health Innovation Lab, University of Pennsylvania, Philadelphia, PA, United States
2 Department of Emergency Medicine, Highland Hospital, Oakland, CA, United States
3 Center for Health Equity Research and Promotion, Philadelphia VA Medical Center, Division of General Internal Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
4 Penn Medicine Center for Healthcare Innovation, Philadelphia VA Medical Center, University of Pennsylvania, Philadelphia, PA, United States
5 Penn Social Media and Health Innovation Lab, The Wharton School, University of Pennsylvania, Philadelphia, PA, United States
6 Penn Social Media and Health Innovation Lab, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
7 Penn Medicine, University of Pennsylvania, Philadelphia, PA, United States
8 Penn Social Media and Health Innovation Lab, Department of Emergency Medicine, University of Pennsylvania, Philadelphia, PA, United States