PT - JOURNAL ARTICLE AU - Ramakanth Kavuluru AU - Sifei Han AU - Ellen J Hahn TI - On the popularity of the USB flash drive-shaped electronic cigarette Juul AID - 10.1136/tobaccocontrol-2018-054259 DP - 2018 Apr 13 TA - Tobacco Control PG - tobaccocontrol-2018-054259 4099 - http://tobaccocontrol.bmj.com/content/early/2018/04/13/tobaccocontrol-2018-054259.short 4100 - http://tobaccocontrol.bmj.com/content/early/2018/04/13/tobaccocontrol-2018-054259.full