M. J. J Van Hemelrijck, D. S Michaud, G. N Connolly and Z. Kabir
Journal of Public Health 31 ( 3 ): 335 - 344 , 2009
G. N Connolly, C. M Carpenter, M. J Travers, K. M Cummings, A Hyland, M Mulcahy and L. Clancy
Nicotine & Tobacco Research 11 ( 6 ): 600 - 605 , 2009