1. Department of Infectious Diseases, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark;
2. Department of Medicine, Nykoebing Falster Hospital, Nykoebing Falster, Denmark;
3. Clinical Research Centre, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark;
4. Reference Laboratory for Antimicrobial Resistance and Staphylococci, Statens Serum Institut, Copenhagen, Denmark;
5. Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark