1. Norwegian Advisory Unit for Antibiotic Use in Hospitals, Department of Research and Development, Haukeland University Hospital, Haukelandsveien 22, 5021, Bergen, Norway
2. Regional Centre for Infection Control, University Hospital of North Norway, 9038, Tromsø, Norway
3. Department of Antibiotic Resistance and Infection Prevention, Norwegian Institute of Public Health, 0213, Oslo, Norway
4. Department of Clinical Science, University of Bergen, Jonas Lies vei 87, 5020, Bergen, Norway