1. Geriatric Research Unit, Department of Geriatric and Palliative Medicine Copenhagen University Hospital, Bispebjerg and Frederiksberg Copenhagen Denmark
2. Department of Clinical Physiology, Nuclear Medicine and PET Rigshospitalet Glostrup Glostrup Denmark
3. CopenAge—Copenhagen Center for Clinical Age Research University of Copenhagen Copenhagen Denmark
4. GENUD Toledo Research Group Universidad de Castilla‐La Mancha Toledo Spain
5. CIBER of Frailty and Healthy Aging (CIBERFES) Madrid Spain
6. The National Research Centre for the Working Environment (NFA) Copenhagen Denmark
7. Department of Clinical Biochemistry Rigshospitalet Glostrup Denmark
8. Department of Clinical Medicine, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
9. Department of Clinical Physiology and Nuclear Medicine University Hospital, Bispebjerg and Frederiksberg Copenhagen Denmark
10. Geriatric Research Unit, Department of Medicine Copenhagen University Hospital, Herlev and Gentofte Herlev Denmark