D’Addario M, Baretta D, Zanatta F, Greco A, Steca P
Engagement Features in Physical Activity Smartphone Apps: Focus Group Study With Sedentary People
JMIR Mhealth Uhealth 2020;8(11):e20460
URL: mhealth.jmir.org/2020/11/e20460
DOI: 10.2196/20460
PMID: 33196450