%0 Journal Article %A K Bjartveit %A A Tverdal %T Health consequences of smoking 1–4 cigarettes per day: response to G F Cope (eletter to journal) %D 2006 %R 10.1136/tc.2005.014589 %J Tobacco Control %P 71-72 %V 15 %N 1 %U https://tobaccocontrol.bmj.com/content/tobaccocontrol/15/1/71.2.full.pdf