• Vikelis M., Katsiari  C, Paraskevopoulou E, Sfikakis P and Mitsikostas DD. Headaches in patients with Systemic Lupus Erythematosus: a prospective study. Poster Presentation at the EHMTIC Congress 2010, Nice, France, 28-31 October 2010.
  • Doskas T, ..., Vikelis M. Galantamine improves cognition, behavioral symptoms and functioning: a 6-month non-interventional study. 1st International Congress on Neurobiology and Clinical Psychopharmacology & European Psychiatric Association Conference on Treatment Guidance, Θεσσαλονίκη, 19-22 Νοεμβρίου 2009. Annals of General Psychiatry 2010, 9(Suppl 1):S131
  • Rallidis L., Zolindaki M., Vikelis M., Liakos G., Pavlakis G., Kremastinos D. Elevated soluble intercellular adhesion molecule-1 levels are associated with poor short-term prognosis in patients with acute ischaemic stroke. Poster Presentation at the ESC Congress 2007, Vienna, Austria, 1-5 September 2007.
  • Konstantopoulos K., Vikelis M., Xifara K., Mitsikostas D. Dysarthria and phonatory instability in multiple sclerosis. Poster Presentation at the 17th Meeting of the European Neurological Society, Rhodes, Greece, 16-20 June 2007.
  • Vikelis M., Papatriantafyllou J. Looman A.C., Karagergiou C. A novel CADASIL-causing mutation in a stroke patient. European Journal of Neurology, 2006;13(Suppl 2):42-168. Poster Presentation at the 10th Congress of the European Federation of Neurological Societies. Glasgow, UK, 2-5 September 2006.
  • Papatriantafyllou J., Kartsaklis L., Kapsalakis I., Visviki T., Zikos P., Vikelis M., Sali D., Tsinia N., Kontogianni V., Lykou E., Karpathiou N., Karageorgiou C.. Frontal assessment in mild cognitive impairment. Poster Presentation at the 10th Congress of the European Federation of Neurological Societies. Glasgow, UK, 2-5 September 2006.
  • Papatriantafyllou J., Tsinia N., Orfanou P., Santa Z., Boulas C., Zikos P., Vikelis M., Kartsaklis L., Sali D.,Kapsalakis I., Kontogianni V., Visviki T., Lykou E., Karpathiou N., Karageorgiou C.. Neuropsychiatric profile of mild cognitive impairment subgroups from an outpatient clinic. Poster Presentation at the 10th Congress of the European Federation of Neurological Societies. Glasgow, UK, 2-5 September 2006.
  • Vikelis M., Xifaras M., Belis K., Gekas G.. An extradural cercicothoracic arachnoid cust causing spinal cord compression in an elder patient. J Neurol, 2006; 253 (suppl 2): II/1-II/170. Poster presentation at 16th Meeting of the European Neurological Society. Lausanne, Switzerland, 27-31 May 2006.
  • Kartsaklis L., Kapsalakis I., Visviki T., Zikos P., Vikelis M., Sali D., Tsinia N., Karpathiou N., Kontogianni V., Papatriantafyllou I., Karageorgiou C.E.. Frontal lobes function in mild cognitive impairment. J Neurol, 2006; 253 (suppl 2): II/1-II/170. Poster presentation at 16th Meeting of the European Neurological Society. Lausanne, Switzerland, 27-31 May 2006.
  • Papatriantafyllou I., Kartsaklis L., Kapsalakis I., Visviki T., Zikos P., Vikelis M., Sali D., Tsinia N., Karageorgiou C.E.. Treatment of Alzheimer’s disease with intravenous immunoglobulins. Poster Presentation at the 58th Annual Meeting of the American Academy of Neurology (AAN). San Diego, USA, April 2006.
  • Mitsikostas D.D., Vikelis M., Viskos A.. Obstructive sleep apnoea syndrome (OSAs) associated with refractory chronic headache. Cephalalgia, 2005;25;863-1020. Poster presentation at the 12th Congress of the International Headache Society, Kyoto, Japan, 9-12 October 2005.
  • Mitsikostas D.D., Peioglou-Charmousi S., Vikelis M., Koudounis A., Zaglis D., Xifaras M., Doetsini S., Georgiadis G., Vogiatzis G.. Migraine recurrence after treatment with oral sumatriptan is not related with anxiety or depression. Cephalalgia, 2005; 25;863-1020. Poster presentation at the 12th Congress of the International Headache Society, Kyoto, Japan, 9-12 October 2005.
  • Vikelis M., Xifaras M., Gekas G., Mitsikostas D.D.. SUNCT syndrome in the elderly. European Journal of Neurology, 2005;12(Suppl 2):37-300. Poster Presentation at the 9th Congress of the European Federation of Neurological Societies, Athens, Greece, 17-20 September 2005.
  • Vikelis M., Xifaras M., Mpasta A., Kolovou A., Galanopoulos A., Markakis I., Gekas G.. Acute pseudobulbar palsy due to bilateral posterior limb capsular infarction. European Journal of Neurology, 2005;12(Suppl 2):37-300. Poster Presentation at the 9th Congress of the European Federation of Neurological Societies, Athens, Greece, 17-20 September 2005.
  • Tabaki N., Vikelis M., Besmertis L., Vemmos K., Stathis P., Mitsikostas D.D.. Apraxia related with subcortical lesions due to cerebrovascular disease. European Journal of Neurology, 2005;12(Suppl 2):37-300. Poster Presentation at the 9th Congress of the European Federation of Neurological Societies, Athens, Greece, 17-20 September 2005.
  • Vikelis M., Papatriantafyllou I., Zikos P., Kapsalakis I., Kartsaklis L., Sali D., Karageorgiou E., Kontoyianni V., Tsinia N., Visviki T., Karpathiou N., Pitsiava E., Karageorgiou C.E.. Demographic, clinical and neuropsychological features of frontotemporal lobar degeneration patients from an outpatient memory clinic. European Journal of Neurology, 2005;12(Suppl 2):37-300. Poster Presentation at the 9th Congress of the European Federation of Neurological Societies, Athens, Greece, 17-20 September 2005.
  • Kapsalakis I., Visviki T., Zikos P., Vikelis M., Kartsaklis L., Sali D., Tsinia N., Karpathiou N., Pitsiava E., Kontoyianni V., Papatriantafyllou I., Karageorgiou C.E.. Assessment of frontal lobes function in a memory clinic through frontal assessment battery (FAB). European Journal of Neurology, 2005;12(Suppl 2):37-300. Poster Presentation at the 9th Congress of the European Federation of Neurological Societies, Athens, Greece, 17-20 September 2005.
  • Karpathiou N., Papatriantafyllou I., Zikos P., Vikelis M., Kapsalakis I., Sali D., Kartsaklis L., Kontoyianni V., Visviki T., Tsinia N., Pitsiava E., Karageorgiou C.E.. Assessment of frontal lobes function in a memory clinic through frontal assessment battery (FAB). European Journal of Neurology, 2005;12(Suppl 2):37-300. Poster Presentation at the 9th Congress of the European Federation of Neurological Societies. Athens, Greece, 17-20 September 2005.
  • Papatriantafyllou I., Kapsalakis I., Kartsaklis L., Zikos P., Vikelis M., Sali D., Karageorgiou E., Kontoyianni V., Tsinia N., Visviki T., Karpathiou N., Sakki K., Kontou M., Gorou L., Karageorgiou C.E.. Treatment of Alzheimer’s disease with intravenous immunoglobulins. European Journal of Neurology, 2005;12(Suppl 2):37-300. Poster Presentation at the 9th Congress of the European Federation of Neurological Societies, Athens, Greece, 17-20 September 2005.
  • Papatriantafyllou I., Toulas P., Sifakis N., Gotsis S., Kontoyianni V., Karpathiou N., Kapsalakis I., Sali D., Zikos P., Vikelis M., Kartsaklis L., Visviki T., Tsinia N., Karageorgiou C.E.. Primary progressive aphasia: reversed asymmetry of atrophy and distributed language outcome. European Journal of Neurology, 2005; 12(Suppl 2):37-300. Poster Presentation at the 9th Congress of the European Federation of Neurological Societies. Athens, Greece, 17-20 September 2005.
  • Vikelis M., Matsoukas P., Kandyla B., Voutsadakis Ε., Xifaras M., Arvanitis Μ., Tsakiris A., Gekas G.. Urinary catheterization in patients with acute ischemic stroke. A common practice in Greece, but are there any consequences? J Neurol, 2005; 252 (suppl 2): II/1-II/170. Poster presentation at 15th Meeting of the European Neurological Society. Vienna, Austria, 18-22 June 2005.
  • Vikelis M., Galanopoulos A., Kyriazis H., Xifaras M., Mpasta A., Papageorgiou N., Gerazounis M., Gekas G.. Multiple cerebral hydatid cysts of cardiac origin. J Neurol, 2005; 252 (suppl 2): II/1-II/170. Poster presentation at 15th Meeting of the European Neurological Society. Vienna, Austria, 18-22 June 2005.
  • Vikelis M., Xifaras M., Sarafoglou C., Gekas G., Mitsikostas D.D.. Cerebral autosomal dominant arteriopathy with subcortical infarcts and leucoencephalopathy (CADASIL): the first family in Greece. Cerebrovascular Diseases, 2005; 19(suppl 2):1-172. Poster presentation at 14th European Stroke Conference. Bologna, Italy, 25-28 May 2005.
  • Rallidis L., Vikelis M., Kaliva K., Liakos G., Rizos I., Kremastinos D.. Raised levels of interleukin-6 are strongly predictive of short term outcome in patients with ischemic stroke. J Am Coll Cardiol, 2005;45(3)(Suppl A):A1-A555.  Poster presentation at the 54th American College of Cardiology Scientific Session.
  • Rallidis L., Vikelis M., Kaliva K., Krania E., Zolindaki M., Liakos G., Kremastinos D.. Elevated levels of C-reactive protein predict poor short-term outcome in patients with ischemic stroke. Eur Heart J, 2004; 25 (abstract suppl): 605.
  • Vikelis M., Xifaras M., Voutsadakis E., Kandyla B., Matsoukas P., Tsakiris A.. Admission characteristics, intensity of care and outcome of ischemic strokes at general hospital of Nikea, Greece. J Neurol, 2004; 251(suppl 3):III/1-III/206. Poster presentation at 14th Meeting of the European Neurological Society. Barcelona, Spain 26-30, June 2004.
  • Vikelis M., Xifaras M., Costis Th., Arvanitis M., Tsakiris A.. Which kind of migraineurs come to our emergency room? Cephalalgia, 2005;25(8):641-683. Poster presentation at the European Headache Federation 7th Headache Congress. Rotterdam, The Netherlands, 16-19 June 2004.
  • Vikelis M., Xifaras M., Basta A., Kolovou A., Tsakiris A.. Hemicrania continua: report of a case with an underlying internal carotid aneurysm. Cephalalgia, 2005;25(8):641-683. Poster presentation at the European Headache Federation 7th Headache Congress. Rotterdam, The Netherlands, 16-19 June 2004.
  • Vikelis M. and Mitsikostas D.D.. Clinical characteristics of patients with episodic cluster headache. Oral presentation at the 14th South European Society for Neurology and Psychiatry. Thessaloniki, Greece, 16-19 October 2003.
  • Vikelis M., Xifaras M., Basta A., Costis Th., Alexiou H., Tsakiris A.. Clinical manifestations and investigation of Wilson’s disease. Poster presentation at the 14th South European Society for Neurology and Psychiatry. Thessaloniki, Greece, 16-19 October 2003.
  • Xifaras M., Markakis I., Alexiou H., Costis Th., Vikelis M., Basta A., Tsakiris A.. Amyotrophic lateral sclerosis associated with primary hyperparathyreoidism. J Neurol, 2003; 250 (suppl 2):II/00-II/000. Poster presentation at the 13th Meeting of the European Neurological Society. Istanbul, Turkey, 14-18 June 2003.
  • Xifaras M., Markakis I., Alexiou H., Vikelis M., Tsakiris A.. Ischemic stroke as first manifestation of acute myeloid leukemia. Cerebrovascular Diseases, 2003; 16 (suppl 4):1-136. Poster presentation at the 12th European Stroke Conference. Valencia, Spain, 21-24 May 2003.