1. Cancer Centre; General Hospital Groeninge; Kortrijk Belgium
2. Department of Radiation Oncology; Ghent University Hospital; Ghent Belgium
3. Biostatistics, Faculty of Medicine; Catholic University Leuven Kulak; Kortrijk Belgium
4. Department of Geriatrics; Ghent University Hospital; Ghent Belgium
5. Department of Medical Oncology; Ghent University Hospital; Ghent Belgium
6. Department of Internal Medicine; Jan Yperman Hospital; Ypres Belgium
7. Department of Internal Medicine; General Hospital OLV Lourdes; Waregem Belgium
8. Department of Oncology; Centre Hospitalier de Wallonie Picarde, RHMS; Tournai Belgium
9. Department of Geriatrics; General Hospital Groeninge; Kortrijk Belgium
10. School of Health & Social Care; University of Greenwich; London UK