Reference:

Cheung YTD, Chan CHH, Lai CKJ, Chan WF, Wang MP, Li WHC, Chan SSC, Lam TH. Using WhatsApp and Facebook online social groups for smoking relapse prevention for recent quitters: a pilot pragmatic cluster randomized controlled trial. Journal of Medical Internet Research. 2015; 7(10):e238. http://dx.doi.org/10.2196/jmir.4829 [2017 IF=4.671] (Ranked 1 out of 25 under the category of “Medical Informatics” and 6 out of 94 under the category of “Health Care Sciences & Services)