1. Department of Mathematics and Statistics; Faculty of Science and Technology, University of Tromsø; 9037 Tromsø Norway
2. Division of Biostatistics, Institute of Social and Preventive Medicine; University of Zurich; Hirschengraben 84 8001 Zurich Switzerland
3. Norwegian Centre for Integrated Care and Telemedicine; University Hospital of North Norway; 9038 Tromsø Norway
4. Department of Microbiology and Infection Control; University Hospital of North Norway; 9038 Tromsø Norway
5. Research Group for Host-Microbe Interaction; Faculty of Health Sciences, Institute of Medical Biology, University of Tromsø; 9037 Tromsø Norway