1. Department of Geriatric Medicine; Nykøbing-Falster Hospital; Nykøbing Falster Denmark
2. Geriatric Section; Department of Internal Medicine; Slagelse Hospital; Slagelse Denmark
3. Department of Geriatric Medicine; Aalborg Hospital; Aalborg Denmark
4. Department of Cardiology; Copenhagen University Hospital Gentofte; Hellerup Denmark
5. Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
6. National Institute of Public Health; University of Southern Denmark; Copenhagen Denmark
7. Institute of Health, Science and Technology; Aalborg University; Aalborg Denmark