1. Faculty of Health, Social Care and Education, St George’s, University of London and Kingston University, London, UK
2. Maastricht University Medical Centre, Maastricht, The Netherlands
3. Oncology Research Centre, Department of Family Medicine and Chronic Care, VUB University, Brussels, Belgium
4. Department of Internal Medicine, Ghent University, Ghent, Belgium
5. Department of Medical Oncology of Ghent University Hospital, Ghent, Belgium