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Bommelé, Jeroen, Tim M. Schoenmakers, Marloes Kleinjan, Barbara van Straaten, Elske Wits, Michelle Snelleman, and Dike van de Mheen. Perceived Pros and Cons of Smoking and Quitting in Hard-core Smokers: A Focus Group Study. BioMed Central, 2014.

Bommelé, Jeroen, et al. Perceived Pros and Cons of Smoking and Quitting in Hard-core Smokers: A Focus Group Study. BioMed Central, 2014.