1. Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
2. Unit of Infectious Diseases, Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
3. Division of Clinical Microbiology, Department of Laboratory Medicine and Pathology, Rochester, MN
4. Division of Infectious Diseases, Department of Medicine, Mayo Clinic, Rochester, MN
5. Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
6. Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden