PT - JOURNAL ARTICLE AU - Chapman, Simon TI - Falling prevalence of smoking: how low can we go? AID - 10.1136/tc.2007.021220 DP - 2007 Jun 01 TA - Tobacco Control PG - 145--147 VI - 16 IP - 3 4099 - http://tobaccocontrol.bmj.com/content/16/3/145.short 4100 - http://tobaccocontrol.bmj.com/content/16/3/145.full SO - Tob Control2007 Jun 01; 16