1. Department of Clinical Sciences, Section for Clinical and Experimental Infection Medicine, Lund University, Lund, Sweden.
2. Department of Experimental Medical Science, Division of Medical Microbiology, Lund University, Lund, Sweden.
3. Department of Laboratory Medicine, Division of Medical Microbiology, Lund University, Lund, Sweden.
4. Department of Infectious Diseases, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden.
5. Department of Virology, Immunology and Vaccinology, Institute of Infectious Disease Control, Karolinska Institute, Stockholm, Sweden.