Published on in Vol 1 , No 2 (2012) :Jul-Dec
1 Ringful Health, LLC , Austin , TX , US
2 University of Texas School of Public Health , Division of Health Promotion and Behavioral Sciences , Austin Regional Campus , Austin , TX , US
3 Texas State University , Department of Computer Information Systems & Quantitative Methods , San Marcos , TX , US
4 Michael & Susan Dell Center for Healthy Living , Austin , TX , US
5 Memorial Sloan-Kettering Cancer Center , Department of Epidemiology and Biostatistics , New York , NY , US
*all authors contributed equally