1. Department of Medical Oncology, VU University Medical Center, Amsterdam, the Netherlands; and Division of Pharmacology and Chemotherapy, Department of Internal Medicine, University of Pisa, Pisa, Italy
2. Division of Oncology, Department of Oncology, Azienda USL-6 of Livorno
3. Division of Oncology, Department of Oncology, Azienda USL-6 of Livorno; and the University of Pisa, Istituto Tumori Toscano, Italy
4. Division of Pharmacology and Chemotherapy, Department of Internal Medicine, University of Pisa, Pisa, Italy
5. Department of Medical Oncology, VU University Medical Center, Amsterdam, the Netherlands