1. Division of Surgery, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
2. Department of Surgical and Perioperative Sciences, Surgery, Umeå University, Umeå, Sweden
3. Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
4. Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, Sweden
5. Department of Clinical Microbiology F 72, Karolinska University Hospital, Huddinge, Stockholm, Sweden
6. Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, Sweden
7. Department of Clinical Pathology/Cytology, Karolinska University Hospital, Huddinge, Sweden
8. Department of Surgery, University of Colorado Denver – Anschutz Medical Campus, Aurora, CO, USA