1 Scientific Bureau, Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, Leiden 2333AA, the Netherlands; Department of Medical Oncology, University Medical Centre Utrecht, Heidelberglaan 100, Utrecht 3584CX, the Netherlands. Electronic address: [email protected].
2 Department of Pathology, University Medical Centre Utrecht, Heidelberglaan 100, Utrecht 3584CX, the Netherlands.
3 Scientific Bureau, Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, Leiden 2333AA, the Netherlands; Department of Biomedical Data Sciences, Leiden University Medical Centre, Einthovenweg 20, Leiden 2333ZC, the Netherlands; Department of Surgical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, the Netherlands.
4 Department of Medical Oncology, University Medical Centre Utrecht, Heidelberglaan 100, Utrecht 3584CX, the Netherlands.