1. Department of Geriatric Medicine, Oslo University Hospital, Oslo, Norway
2. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
3. Applied Radiation Therapy Trinity, Trinity St James's Cancer Institute, Trinity College Dublin, Dublin, Ireland
4. Department of Medical Oncology, Institut Bergonié, Université de Bordeaux, Inserm U1218, Bordeaux, France
5. Department of Medicine, University of Toronto, Toronto, ON, Canada
6. Internal Medicine and Geriatrics, University Health Network, Toronto, ON, Canada
7. Department of Geriatric Medicine, Diakonessenhuis, Utrecht, the Netherlands