1. Expert Center for Chronic Fatigue (ECCF); Radboud University Medical Center; Nijmegen The Netherlands
2. Department of Medical Psychology, Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands
3. Department of Medical Psychology; Hospital Gelderse Vallei; Ede The Netherlands
4. Department of Education and Training; University Medical Center Utrecht; Utrecht The Netherlands
5. Department of Surgery; Hospital Gelderse Vallei; Ede The Netherlands
6. Department of Medical Oncology; Hospital Gelderse Vallei; Ede The Netherlands
7. Department of Medical Oncology; Radboud University Medical Center; Nijmegen The Netherlands