BibTex format
@article{Rajani:2019:10.1136/bmjopen-2018-027883,
author = {Rajani, NB and Weth, D and Mastellos, N and Filippidis, FT},
doi = {10.1136/bmjopen-2018-027883},
journal = {BMJ Open},
title = {Use of gamification strategies and tactics in mobile applications for smoking cessation: a review of the UK mobile app market.},
url = {http://dx.doi.org/10.1136/bmjopen-2018-027883},
volume = {9},
year = {2019}
}