[1] Evangelismos Hospital,Department of Neurosurgery
[2] Evangelismos Hospital,Department of Critical Care Medicine
[3] Hellenic Red Cross Hospital,Department of Critical Care Medicine
[4] Medical School,Department of Biochemistry
[5] National & Kapodistrian University of Athens,undefined
[6] Evangelismos Hospital,undefined
[7] Medical School,undefined
[8] National & Kapodistrian University of Athens,undefined