Blended Smoking Cessation Treatment: Exploring Measurement, Levels, and Predictors of Adherence.
Lutz SiemerMarjolein G J Brusse-KeizerMarloes Gerda PostelSomaya Ben AllouchAngelos Patrinopoulos BougioukasRobbert SandermanMarcel E PietersePublished in: Journal of medical Internet research (2018)
Netherlands Trial Registry NTR5113; http://www.trialregister.nl/trialreg/admin/rctview.asp?TC=5113 (Archived by WebCite at http://www.webcitation.org/71BAPwER8).