1. Department of Epidemiology and Biostatistics, Amsterdam UMC, VU University, PO Box 7057, MF F-wing, Amsterdam, 1007 MB, The Netherlands
2. Department of Epidemiology and Biostatistics, VU University, Amsterdam, The Netherlands
3. Department of Research and Development, Netherlands Comprehensive Cancer Organization (IKNL), Utrecht, The Netherlands
4. University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
5. Department of Medical Oncology, University of Amsterdam, Amsterdam, The Netherlands