1. Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
2. Department of Laboratory Medicine, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
3. Department of Clinical Chemistry, Sahlgrenska University Hospital, Gothenburg, Sweden
4. Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
5. Department of Immunology and Transfusion Medicine, Sahlgrenska University Hospital, Gothenburg. Sweden
6. Department of Molecular and Clinical Medicine/Wallenberg Laboratory, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
7. Laboratory of Neurochemistry, Department of Clinical Biology and Center for Neurosciences, UZ Brussel and Vrije Universiteit Brussel, Brussels, Belgium
8. Department of Biomedical Sciences, Institute Born-Bunge, University of Antwerp, Antwerp, Belgium