1. Research Unit of Internal Medicine University of Oulu Oulu Finland
2. Biocenter Oulu University of Oulu Oulu Finland
3. Medical Research Center Oulu Oulu University Hospital and University of Oulu Oulu Finland
4. Clinical Chemistry, HUS Diagnostic Center University of Helsinki and Helsinki University Hospital Helsinki Finland
5. School of Medicine, Institute of Clinical Medicine University of Eastern Finland Kuopio Finland