Published on in Vol 5, No 1 (2018): Jan-Jun
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/8251, first published
.

Journal of Medical Internet Research
Using Facebook for Large-Scale Online Randomized Clinical Trial Recruitment: Effective Advertising Strategies |
Nicotine & Tobacco Research
Effect of a Responsiveness-Based Support Intervention on Smokeless Tobacco Cessation: The UCare-ChewFree Randomized Clinical Trial |