1. Østfold Hospital Trust, Center for Laboratory Medicine Sarpsborg Norway
2. Faculty of Medicine Institute of Clinical Medicine, University of Oslo Oslo Norway
3. Department of Infection Control Østfold Hospital Trust Sarpsborg Norway
4. Department of Methods Development and Analytics, Division of Infection Control and Environmental Health Norwegian Institute of Public Health Oslo Norway
5. Department of Biostatistics Centre for Biostatistics and Epidemiology, Institute of Basic Medical Sciences, University of Oslo Oslo Norway
6. Department of Chemistry, Biotechnology and Food Science Norwegian University of Life Sciences Ås Norway
7. Department of Microbiology Oslo University Hospital Oslo Norway