by Mena Blacio, Iván, Olivares, Diego A., del Brutto Perrone, Oscar H., Leone Stay, Gaetano
Published in Revista de neurologiá (2000)

by Mena Blacio, Iván, Noboa, C.A., Leone Stay, Gaetano, Vásconez, J.V., Cárdenas Mera, B.
Published in Revista de neurologiá (1998)