1. Department of Clinical Sciences; Danderyd Hospital; Karolinska Institute; Stockholm Sweden
2. Department of Medical Epidemiology and Biostatistics; Karolinska Institute; Stockholm Sweden
3. Department of Clinical Microbiology; Karolinska University Hospital; Stockholm Sweden
4. Department of Microbiology and Tumour and Cell Biology (MTC); Karolinska Institute; Stockholm Sweden
5. Department of Clinical Microbiology; Unilabs Stockholm; Stockholm Sweden