Bernard Vrijens is the Scientific Lead at Advanced Analytical Research on Drug Exposure (Aardex Group). He is also Invited Professor of Biostatistics at Liege University (Belgium). Dr Vrijens holds a PhD from the Department of Applied Mathematics and Informatics at Ghent University (Belgium), is the co-author of seven book chapters and over 100 peer-reviewed scientific papers, and named as inventor on six patents. Dr Vrijens is a founding member of the International Society for Medication Adherence (ESPACOMP), and an active member of several EU- and US-funded collaborative projects around the theme of adherence to medications.