1. Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Stockholm, Sweden
2. Department of Biological Sciences, University of Idaho, Moscow, ID, USA
3. Department of Medicine Huddinge (MedH), Karolinska Institutet, Stockholm, Sweden
4. Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
5. Department of Aquatic Sciences and Assessment, Swedish Environmental Epidemiology Center, Swedish University of Agricultural Sciences, Uppsala, Sweden