[1] Deutsch Zentrum Neurodegenerat Erkrankungen eV DZ, Witten, Germany
[2] Univ Witten Herdecke, Fac Hlth, Dept Nursing Sci, Witten, Germany
[3] Maastricht Univ, Dept Psychiat & Neuropsychol, Sch Mental Hlth & Neurosci, Alzheimer Ctr Limbur, Maastricht, Netherlands
[4] Univ Bremen, Inst Publ Hlth & Nursing Sci, Bremen, Germany
[5] Dept Med Older People Amsterdam UMC, Amsterdam, Netherlands