1. Department of Mathematics and Statistics, University of Tromsø—The Arctic University of Norway, NO-9019 Tromsø, Norway
2. Norwegian Centre for E-Health Research, P.O. Box 35, NO-9038 Tromsø, Norway
3. Department of Public Health and Nursing, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
4. Department of Health and Care Sciences, University of Tromsø—The Arctic University of Norway, NO-9019 Tromsø, Norway
5. Department of Physics and Technology, University of Tromsø—The Arctic University of Norway, NO-9019 Tromsø, Norway
6. Department of Clinical Medicine, University of Tromsø—The Arctic University of Norway, NO-9019 Tromsø, Norway