Authors: Bernaards, CM Twisk, JWR Snel, J Van Mechelen, W Kemper, HCG

Citation: Cm. Bernaards et al., Is calculating pack-years retrospectively a valid method to estimate life-time tobacco smoking? A comparison between prospectively calculated pack-years and retrospectively calculated pack-years, ADDICTION, 96(11), 2001, pp. 1653-1661

Authors: Bernaards, CM Kemper, HCG Twisk, JWR van Mechelen, W Snel, J

Citation: Cm. Bernaards et al., Smoking behaviour and biological maturation in males and females: a 20-year longitudinal study. Analysis of data from the Amsterdam Growth and HealthLongitudinal Study, ANN HUM BIO, 28(6), 2001, pp. 634-648