1. The Hospital of Østfold, Fredrikstad, Norway;
2. University of Oslo, Oslo, Norway;
3. Department of Cardiology and Center for Cardiological Innovation, Oslo University Hospital Rikshospitalet, Oslo, Norway;
4. Department of Internal Medicine, Diakonhjemmet Hospital, Oslo, Norway;
5. Department of Chemistry, Biotechnology and Food Sciences, Norwegian University of Life Sciences, Ås, Norway