RT Journal Article SR Electronic T1 Electronic cigarettes: reasons to be cautious JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 307 OP 308 DO 10.1136/thoraxjnl-2014-206735 VO 70 IS 4 A1 Andrew Furber YR 2015 UL http://thorax.bmj.com/content/70/4/307.abstract AB