"28000" . . . . . . . . . . . . . "DUTH" . . . . . . "University" . . "Democritus University of Thrace" . . . . . "Democritus University of Thrace" . . . . . "TEFAA student at the Democritus University of Thrace" . . . . . . . "University of Thrace" . .