Published on in Vol 17, No 7 (2015): July
1 Center for Behavioral Intervention Technologies (CBITs), Northwestern University , Chicago, IL, US
2 Office of Behavioral and Social Sciences Research, National Institutes of Health , Washington DC, DC, US
3 Department of Psychiatry, Northwestern University , Chicago, IL, US
4 Department of Psychology and Pedagogy, Vrije Universiteit , Amsterdam , NL
5 Department of Psychiatry, Columbia University , New York, NY, US
6 Department of Preventive Medicine, Northwestern University , Chicago, IL, US
7 Mailman School of Public Health, Columbia University , New York, NY, US