The efficacy of mobile phone-based text message interventions ('Happy Quit') for smoking cessation in China.
Yanhui LiaoQiuxia WuJinsong TangFengyu ZhangXuyi WangChang QiHaoyu HeJiang LongBrian C KellyJoanna CohenPublished in: BMC public health (2016)
NCT02693626 (Registration data April 11, 2016).