[1] The Netherlands Cancer Institute,Department of Medical Oncology
[2] Leiden University Medical Center,Department of Radiotherapy
[3] Erasmus University Medical Center,Department of Medical Oncology
[4] University Medical Center Groningen,Department of Internal Medicine
[5] University Medical Center Groningen,Department of Medical Oncology
[6] The Netherlands Cancer Institute,Department of Psychosocial Research and Epidemiology
[7] The Netherlands Cancer Institute,Department of Medical Oncology
[8] University of Amsterdam,Department of Medical Oncology