Competitions for smoking cessation.
Fanshawe, Thomas R and Hartmann-Boyce, Jamie and Perera, Rafael and Lindson, Nicola [The Cochrane Library] . (2019) Competitions for smoking cessation. London: John Wiley & Sons, Ltd. Cochrane Database of Systematic Reviews (2) Art. No.: CD013272. DOI: 10.1002/14651858.CD013272
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