1. Department of Internal Medicine, Elisabeth-TweeSteden Ziekenhuis, Tilburg, The Netherlands;
2. Department of Sports Medicine, SportMáx, Máxima Medical Centre, Eindhoven and Veldhoven, The Netherlands;
3. Department of Internal Medicine, Máxima Medical Centre, Eindhoven and Veldhoven, The Netherlands;
4. Department of Medical Oncology, Maastricht University Medical Centre, Maastricht, The Netherlands;
5. Department of Human Movement Science, Maastricht University, Maastricht, The Netherlands;
6. Department of Medical Psychology, Radboud University Medical Centre, Nijmegen, The Netherlands.