Impact of the revised European Tobacco Product Directive on the quality of  e-cigarette refill liquids in Belgium, Barhdadi, Sophia, Moens Goedele, Canfyn Michael, Vanhee Celine, Desmedt Bart, Courselle Patricia, Rogiers Vera, Vanhaecke Tamara, and Deconinck Eric , 20th Forum of Pharmaceutical Sciences - Brussels - 20 May 2019, 2019, (2019)