RT Journal Article SR Electronic T1 Retraction: Identification of volatile constituents released from IQOS heat-not-burn tobacco HeatSticks using a direct sampling method JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 478 OP 478 DO 10.1136/tobaccocontrol-2019-055521ret VO 30 IS 4 YR 2021 UL http://tobaccocontrol.bmj.com/content/30/4/478.abstract AB