1. Metabolic and Renal Research Group, UiT – The Arctic University of Norway, Tromso, Norway
2. Section of Nephrology, University Hospital of North Norway, Tromso, Norway
3. Center for Quality Assurance and Development, University Hospital of North Norway, Tromso, Norway
4. Department of Transplantation Medicine, Oslo University Hospital and University of Oslo, Oslo, Norway
5. Department of Pharmacy, UiT – The Arctic University of Norway, Tromso, Norway
6. Research Group in Mass Spectrometry, Department of Biotechnology and Nanomedicine, SINTEF A/S, Tromsø, Norway
7. Metabolomics and Metabolic Molecular Biology Group, Oslo University Hospital, Oslo, Norway
8. Department of Blood Bank and Biochemistry, Innlandet Hospital Trust, Lillehammer, Norway
9. Hormone Laboratory, Department of Medical Biochemistry, Biochemical Endocrinology and Metabolism Research Group, Oslo University Hospital, Oslo, Norway