Britton John
UK Centre for Tobacco Control Studies, Division of Epidemiology and Public Health, University of Nottingham, City Hospital, Nottingham NG5 1PB, UK.
Lancet. 2011 Jun 18;377(9783):2063-4. doi: 10.1016/S0140-6736(10)62040-5. Epub 2011 Mar 4.