1 Department of Microbiology and Infection Control, Akershus University Hospital, Lørenskog, Norway; Department of Research, Cancer Registry of Norway, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
2 National Institute for Public Health and the Environment (RIVM), Centre for Infectious Disease Research, Diagnostics and Screening, Bilthoven, the Netherlands; Vrije Universiteit-University Medical Center (VUmc), Department of Pathology, Amsterdam, the Netherlands.
3 Department of Research, Cancer Registry of Norway, Oslo, Norway.
4 Department of Microbiology and Infection Control, Akershus University Hospital, Lørenskog, Norway; Department of Clinical Molecular Biology (EpiGen), Division of Medicine, Akershus University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
5 National Institute for Public Health and the Environment (RIVM), Centre for Infectious Disease Research, Diagnostics and Screening, Bilthoven, the Netherlands. Electronic address: audrey.king@rivm.nl.
6 Faculty of Health Sciences, OsloMet - Oslo Metropolitan University, Oslo, Norway. Electronic address: olam@oslomet.no.