1Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, Leiden, 2333AA The Netherlands
2Department of Medical Oncology, Amsterdam UMC, VU University Medical Center, Cancer Center Amsterdam, De Boelelaan 1118, Amsterdam, 1081HZ The Netherlands
3Department of Surgical Oncology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066CX The Netherlands
4Department of Pharmacy, Rode Kruis Ziekenhuis, Vondellaan 13, Beverwijk, 1942LE The Netherlands
5Department of Medical Oncology and Immunology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066CX The Netherlands
6Department of Molecular Oncology & Immunology, Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam, 1066CX The Netherlands
7Department of Medical Oncology, Maastricht University Medical Centre, P. Debyelaan 25, Maastricht, 6229 HX The Netherlands
8Department of Medical Oncology, Zuyderland Medical Centre Sittard, Dr. H. van der Hoffplein 1, Sittard-Geleen, 6162BG The Netherlands
9Isala Oncology Center, Isala, Dokter van Heesweg 2, Zwolle, 8025AB The Netherlands
10Department of Medical Oncology, University Medical Centre Groningen, Hanzeplein 1, Groningen, 9713GZ The Netherlands
11Department of Medical Oncology, Leiden University Medical Centre, Albinusdreef 2, Leiden, 2333ZA The Netherlands
12Department of Internal Medicine, Medisch Spectrum Twente, Koningsplein 1, Enschede, 7512KZ The Netherlands
13Department of Internal Medicine, Medical Centre Leeuwarden, Henri Dunantweg 2, Leeuwarden, 8934AD The Netherlands
14Department of Medical Oncology, University Medical Centre Utrecht, Heidelberglaan 100, Utrecht, 3584CX The Netherlands
15Department of Pathology, Division of Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht. Heidelberglaan 100, Utrecht, 3584 CX The Netherlands
16Department of Internal Medicine, Amphia Hospital, Molengracht 21, Breda, 4818CK The Netherlands
17Departments of Medical Oncology and Radiology & Nuclear Medicine, Erasmus Medical Centre, ‘s-Gravendijkwal 230, Rotterdam, 3015CE The Netherlands
18Department of Internal Medicine, Maxima Medical Centre, De Run 4600, Eindhoven, 5504DB The Netherlands
19Department of Medical Oncology, Radboud University Medical Centre, Geert Grooteplein Zuid 10, Nijmegen, 6525GA The Netherlands