1. Department of Clinical Microbiology, Aalborg Hospital, Aarhus University Hospital, Aalborg, Denmark
2. Department of Orthopaedics, Regional Hospital Silkeborg, Silkeborg, Denmark
3. Department of Orthopaedics, Aarhus Hospital, Aarhus University Hospital, Aarhus, Denmark
4. Life Science Division, The Danish Technology Institute, Aarhus, Denmark
5. Section of Biotechnology, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Aalborg, Denmark