1. From the Department of Internal Medicine, Herning Hospital, Herning, Denmark
2. Departments of Clinical Microbiology and Clinical Epidemiology, Aalborg Hospital-Aarhus University Hospital, Aalborg, Denmark
3. Department of Clinical Microbiology, Aarhus University Hospital, Aarhus, Denmark
4. Department of Clinical Microbiology, Viborg Hospital, Viborg, Denmark