1. Department of Laboratory Medicine, Division of Clinical Microbiology, ANA Futura, Karolinska Institutet, Stockholm 141 52 Sweden
2. The Laboratory for Molecular Infection Medicine Sweden MIMS, Umeå University, Umeå 901 87, Sweden
3. Department of Clinical Microbiology, Karolinska University Hospital, Solna, Stockholm 171 76,Sweden
4. Department of Medicine Huddinge, Division of Infectious Diseases, Karolinska University Hospital, Huddinge, Stockholm 141 86, Sweden