Wen, Si and Wiers, Reinout W and Boffo, Marilisa and Grasman, Raoul P P P and Pronk, Thomas and Larsen, Helle (2021) Subtypes of smokers in a randomized controlled trial of a web-based smoking cessation program and their role in predicting intervention non-usage attrition: Implications for the development of tailored interventions. Internet Interventions , 26 , p. 100473.