1. Department of PsychiatryRadboud University Nijmegen Medical Centre for Mindfulness Nijmegen The Netherlands
2. Centre for Psycho‐Oncology, Scientific Research DepartmentHelen Dowling Institute Bilthoven The Netherlands
3. Institute of PsychologyLeiden University Leiden The Netherlands
4. Department of PsychiatryLeiden University Medical Center Leiden The Netherlands
5. Donders Institute for Brain, Cognition and BehaviorRadboud University Nijmegen The Netherlands