[1] “Hippokration” Hospital,Oncology Section, Second Department of Internal Medicine
[2] Aristotle University of Thessaloniki School of Medicine,Department of Medical Oncology, “Papageorgiou” Hospital
[3] Section of Biostatistics,Division of Oncology, Department of Medicine
[4] Hellenic Cooperative Oncology Group,Department of Pathology
[5] Data Office,Third Department of Medical Oncology
[6] University Hospital,First Propaedeutic Department of Surgery, “AHEPA” Hospital
[7] University of Patras Medical School,Department of Medical Oncology
[8] Aristotle University of Thessaloniki School of Medicine,First Department of Medical Oncology
[9] “Agii Anargiri” Cancer Hospital,Laboratory of Molecular Oncology, Hellenic Foundation for Cancer Research
[10] Aristotle University of Thessaloniki School of Medicine,Department of Pathology
[11] “Hippokration” Hospital,Department of Medical Oncology
[12] “Metropolitan” Hospital,undefined
[13] Aristotle University of Thessaloniki School of Medicine,undefined
[14] University Hospital,undefined
[15] University of Patras Medical School,undefined
[16] Ioannina University Hospital,undefined