1. Department of Research and Development Netherlands Comprehensive Cancer Organisation Utrecht the Netherlands
2. Department of Medical and Clinical Psychology Tilburg University Tilburg the Netherlands
3. Department of Methodology and Statistics Tilburg University Tilburg the Netherlands
4. Division of Psychosocial Research and Epidemiology Netherlands Cancer Institute Amsterdam the Netherlands
5. Department of Medical Oncology Netherlands Cancer Institute Amsterdam the Netherlands
6. Division of Clinical Studies Institute of Cancer Research London United Kingdom