Laboratory of Medical Biochemistry, Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium. Institute for Molecular Cardiovascular Research, RWTH Aachen University, Aachen, Germany. Section of Clinical Chemistry, Department of Medical Sciences, University of Uppsala, Uppsala, Sweden. Department of Endocrinology, Diabetology and Metabolism, Antwerp University Hospital, Edegem, Belgium. Laboratory of Experimental Medicine and Paediatrics (LEMP), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium. Laboratory of Biochemistry and Cell Biology (URBC), Namur Research Institute for Life Sciences (NARILIS), University of Namur (UNamur), Namur, Belgium. StatUa Center for Statistics, University of Antwerp, Antwerp, Belgium. Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium.