PT - JOURNAL ARTICLE AU - Charis Girvalaki AU - Manolis Tzatzarakis AU - Alexander Vardavas AU - Christina Kyriakos AU - Katerina Nikitara AU - Polychronis Stivaktakis AU - Aristidis Tsatsakis AU - Constantine Vardavas TI - Discrepancies in reported <em>versus</em> measured nicotine content of e-cigarette refill liquids across 9 European Countries before and after the implementation of the EU Tobacco Products Directive AID - 10.1183/13993003.00941-2019 DP - 2019 Jan 01 TA - European Respiratory Journal PG - 1900941 4099 - http://erj.ersjournals.com/content/early/2019/10/31/13993003.00941-2019.short 4100 - http://erj.ersjournals.com/content/early/2019/10/31/13993003.00941-2019.full