1. University of Tromsø; Faculty of Health Sciences, Institute of Medical Biology, Molecular Inflammation Research Group; Tromsø Norway
2. University Hospital of North Norway; Department of Medical Genetics; Tromsø Norway
3. University of Tromsø; Faculty of Health Sciences, Institute of Clinical Medicine, Neuromuscular Research Group; Tromsø Norway
4. Division 12 ‘Measles, Mumps, Rubella and Viruses Affecting Immunocompromised Patients’; Robert Koch Institute; Berlin Germany