Prevention of smoking in adolescents with lower education: a school based intervention study
M R Crone, S A Reijneveld, M C Willemsen, F J M van Leerdam, R D Spruijt, R A Hira Sing
Journal of Epidemiology & Community Health Sep 2003, 57 (9) 675-680; DOI: 10.1136/jech.57.9.675