@Article{info:doi/10.2196/17492, author="Vitolo, Marcia Regina", title="The Kurbo App: The Freemium Model and Developmental Behavior Concerns. Comment on ``Impact of a Mobile App--Based Health Coaching and Behavior Change Program on Participant Engagement and Weight Status of Overweight and Obese Children: Retrospective Cohort Study''", journal="JMIR Mhealth Uhealth", year="2021", month="Feb", day="25", volume="9", number="2", pages="e17492", keywords="childhood obesity; intervention; app", issn="2291-5222", doi="10.2196/17492", url="https://mhealth.jmir.org/2021/2/e17492", url="https://doi.org/10.2196/17492", url="http://www.ncbi.nlm.nih.gov/pubmed/33629965" }