Citation:
Zethof, D. , Nagelhout, G. E. , de Rooij, M. , Driezen, P. , Fong, G. T. , van den Putte, B. , Hummel, K. , et al. (2016). Attrition analysed in five waves of a longitudinal yearly survey of smokers: findings from the ITC Netherlands survey. European Journal of Public Health. doi:10.1093/eurpub/ckw037