1. Department of General Internal Medicine, Endocrinology and Metabolic Diseases, Leiden University Medical Center, and Department of Biomedical Research, TNO-Quality of Life, Gaubius Laboratory, Leiden, The Netherlands
2. Department of Clinical Chemistry and Pharmacology, University of Bonn, Germany
3. Department of Neuroscience, Maastricht University, The Netherlands
4. Department of Molecular Cell Biology, Maastricht University, The Netherlands
5. Department of Neuropsychology and Psychopharmacology, Maastricht University, The Netherlands
6. Department of Pediatrics, University Medical Center Groningen, The Netherlands
7. Department of Internal Medicine, Division of Pharmacology, Vascular and Metabolic Diseases, Erasmus Medical Center, Rotterdam, The Netherlands
8. Department of General Surgery, Maastricht University, The Netherlands