1. Frailty in Ageing (FRIA) research department, Vrije Universiteit Brussel (VUB), Brussels, Belgium
2. Faculty of Medicine and Pharmacy, Gerontology department, Vrije Universiteit Brussel, Brussels, Belgium
3. Faculty of Medicine and Health Sciences, Department of Rehabilitation Sciences, Occupational Therapy research group, Ghent University, Ghent, Belgium
4. SOMT University of Physiotherapy, Amersfoort, The Netherlands
5. Geriatrics department, Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
6. Belgian Ageing Studies research group, VUB, Brussels, Belgium
7. Artevelde University of Applied Sciences, Ghent, Belgium