1. Department of Internal Medicine Hematology, and Oncology, University Hospital Brno, Brno, Czech Republic
2. School of Medicine Masaryk University, Brno, Czech Republic
3. Scientific Coordination and Biostatistics Antwerp University Hospital, Edegem, Belgium
4. Faculty of Medicine and Health Sciences University of Antwerp, Antwerp, Belgium
5. Kobe University Hospital Cancer Center, Hyogo, Japan
6. Department of Head and Neck Medical Oncology National Cancer Center Hospital East, Chiba, Japan
7. Department of Medical Oncology Tata Memorial Hospital, Mumbai, Maharashtra, India
8. Medical Oncology Centro Hospitalar do Porto, Porto, Portugal
9. Head and Neck Medical Oncology Unit Fondazione IRCCS Istituto Nazionale dei Tumori, Milan and University of Milan, Milan, Italy
10. Department of Hematology and Medical Oncology Taussig Cancer Institute, Cleveland Clinic, Cleveland, Ohio, USA
11. Department of Medical Oncology Antwerp University Hospital, Edegem, Belgium