Free et al randomized 5,800 UK ready-to-quit smokers to get regular motivational text messages and help-line access, vs.
Texting helped smokers quit (txt2stop trial)
Texting helped smokers quit (txt2stop trial)
Texting helped smokers quit (txt2stop trial)
Free et al randomized 5,800 UK ready-to-quit smokers to get regular motivational text messages and help-line access, vs.