[1] Aristotle Univ Thessaloniki, AHEPA Univ Hosp, Dept Surg 3, Sch Hlth Sci,Fac Med, Thessaloniki, Greece
[2] Aristotle Univ Thessaloniki, Sch Hlth Sci, Fac Med, Dept Pathol, Thessaloniki, Greece
[3] Aristotle Univ Thessaloniki, Hellen Fdn Canc Res, Mol Oncol Lab, Thessaloniki, Greece
[4] Hellen Cooperat Oncol Grp, Data Off, Biostat Sect, Athens, Greece
[5] Univ Athens, Sch Med, Alexandra Hosp, Dept Clin Therapeut, Athens, Greece
[6] Aristotle Univ Thessaloniki, Papageorgiou Hosp, Dept Med Oncol, Sch Hlth Sci,Fac Med, Thessaloniki, Greece
[7] Ioannina Univ Hosp, Ioannina, Greece
[8] Hippokrateion Hosp, Dept Internal Med 2, Oncol Sect, Athens, Greece
[9] Aristotle Univ Thessaloniki, Papageorgiou Hosp, Dept Pathol, Sch Hlth Sci,Fac Med, Thessaloniki, Greece
[10] Metropolitan Hosp, Dept Med Oncol 2, Piraeus, Greece
[11] Hygeia Hosp, Dept Med Oncol 3, Athens, Greece
[12] Univ Athens, Sch Med, Dept Pathol, Athens, Greece
[13] Evangelismos Med Ctr, Dept Pathol, Athens, Greece
[14] Agii Anargiri Canc Hosp, Dept Med Oncol 2, Athens, Greece
[15] Metropolitan Hosp, Dept Med Oncol 1, Piraeus, Greece
[16] Hippokrateion Hosp, Oncol Unit, Athens, Greece
[17] Univ Athens, Sch Med, Laiko Gen Hosp, Dept Med 1, Athens, Greece
[18] Hellen Cooperat Oncol Grp, Data Off, Translat Res Sect, Athens, Greece
[19] Aristotle Univ Thessaloniki, Thessaloniki, Greece