@Article{info:doi/10.2196/jmir.3701, author="Mitchell, Marc Steven and Faulkner, Guy E", title="On Supplementing ``Foot in the Door'' Incentives for eHealth Program Engagement", journal="J Med Internet Res", year="2014", month="Jul", day="25", volume="16", number="7", pages="e179", keywords="cardiovascular risk; prevention; rewards", issn="1438-8871", doi="10.2196/jmir.3701", url="http://www.jmir.org/2014/7/e179/", url="https://doi.org/10.2196/jmir.3701", url="http://www.ncbi.nlm.nih.gov/pubmed/25092221" }