TY - JOUR T1 - The use of a smartphone app and an activity tracker to promote physical activity in the management of chronic obstructive pulmonary disease : randomized controlled feasibility study JO - JMIR mHealth and uHealth UR - http://eprints.whiterose.ac.uk/161589/ PY - 2020/06/03 AU - Bentley CL AU - Powell L AU - Potter S AU - Parker J AU - Mountain GA AU - Bartlett YK AU - Farwer J AU - O'Connor C AU - Burns J AU - Cresswell RL AU - Dunn HD et al ED - DO - DOI: 10.2196/16203 PB - JMIR Publications Inc. VL - 8 IS - 6 Y2 - 2024/10/23 ER -