3 Department of Global Public Health and Primary Care, Centre for Elderly and Nursing Home Medicine, University of Bergen, Årstadveien 17, Bergen, 5009, Norway.
4 Inland Norway University of Applied Sciences, Postboks 400 Vestad, Elverum, 2418, Norway.
5 Department of Neurology, Haukeland University Hospital, Jonas Lies vei 71, Bergen, 5053, Norway.
6 Mohn Medical Imaging and Visualisation Centre (MMIV), Ulriksdal 8, Bergen, 5009, Norway.
7 Western Norway University of Applied Sciences, Inndalsveien 28, Bergen, 5063, Norway.