1. From the Department of Geriatric Medicine (T.H.E., G.S., B.H.S.), Oslo University Hospital; Department for Physical Health and Aging (A.K.H., E.Z., B.E., T.M., V.F.S., B.H.S.), Norwegian Institute of Public Health, Oslo; Department of Neuromedicine and Movement Science (A.K.H.), Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim; Norwegian National Centre for Ageing and Health (E.Z., G.S., V.F.S., B.H.S.), Vestfold Hospital Trust, Tønsberg; Centre for...