%0 Journal Article %A Youn Ok Lee %A Arnab Mukherjea %A Rachel Grana %T Hookah steam stones: smoking vapour expands from electronic cigarettes to waterpipes %D 2013 %R 10.1136/tobaccocontrol-2012-050557 %J Tobacco Control %P 136-137 %V 22 %N 2 %U https://tobaccocontrol.bmj.com/content/tobaccocontrol/22/2/136.full.pdf