Development of a sample preparation method for the GC-analysis of e-cigarette refill liquids, Barhdadi, Sophia, Canfyn Michael, Desmedt Bart, El Merabety Sanae, Courselle Patricia, Rogiers Vera, Vanhaecke Tamara, and Deconinck Eric , Euroanalysis XX - 1-5 September 2019, Istanbul, 2019, (2019)