[1] Natl & Kapodistrian Univ Athens, Sch Med, Postgrad Master Course Thorac Oncol, Athens, Greece
[2] Natl & Kapodistrian Univ Athens, Sch Med, Dept Internal Med 3, Oncol Unit, Athens, Greece
[3] Natl & Kapodistrian Univ Athens, Sch Med, Resp Med Dept 1, Athens, Greece
[4] Natl & Kapodistrian Univ Athens, Sch Med, Dept Internal Med 1, Oncol Unit, Athens, Greece