1. 1st Department of Neurology, Eginition Hospital, School of Medicine, National and Kapodistrian University of Athens, 11528 Athens, Greece
2. Department of Pathophysiology, Laiko General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece
3. Department of Neurosurgery, General University Hospital of Larissa, 41221 Larissa, Greece
4. Unit of Endocrinology, First Department of Internal Medicine, Laiko General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece
5. Department of Biochemistry, Sismanogleio Hospital, 15126 Athens, Greece
6. Laboratory of Clinical Virology, School of Medicine, University of Crete, 71003 Heraklion, Greece