1. Section of Infectious Disease, Department of Medicine, Haukeland University Hospital, Bergen, Norway;
2. Department of Medicine, Haraldsplass Deaconess Hospital, Bergen, Norway;
3. Section of Cardiothoracic Surgery, Department of Heart Disease, Haukeland University Hospital, Bergen, Norway;
4. Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway;
5. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway;
6. Department of Microbiology, Haukeland University Hospital, Bergen, Norway