1 Department of Neurology, Fleni, Fleni Montañeses 2325, Buenos Aires, 1428, Argentina.
2 Rheumatology Section, Department of Internal Medicine, Fleni, Buenos Aires, Argentina.
3 Department of Biological Chemistry, Institute of Chemistry and Biological Physicochemistry (IQUIFIB), School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina.
4 Department of Neurology, Fleni, Fleni Montañeses 2325, Buenos Aires, 1428, Argentina. mmarrodan@fleni.org.ar.