1. Department of Laboratory Medicine , The Netherlands Cancer Institute , Amsterdam , The Netherlands , Phone: +31-20-5122756, Fax: +31-20-5122799
2. Department of Psychiatry and the Center for Quality of Life , The Netherlands Cancer Institute , Amsterdam , The Netherlands
3. Department of Laboratory Medicine , The Netherlands Cancer Institute , Amsterdam , The Netherlands
4. Division of Medical Oncology , The Netherlands Cancer Institute , Amsterdam , The Netherlands