André J Scheen1,2. 1. Division of Diabetes, Nutrition and Metabolic Disorders, CHU Liège, Liège, Belgium. andre.scheen@chuliege.be. 2. Division of Clinical Pharmacology, Center for Interdisciplinary Research on Medicines (CIRM), University of Liège, Liège, Belgium. andre.scheen@chuliege.be.