Sonographic assessment of the optic nerve sheath diameter in the diagnosis of idiopathic intracranial hypertension - del Saz-Saucedo, P; Redondo-González, O; Mateu-Mateu, Á; Huertas-Arroyo, R; García-Ruiz, R; Botia-Paniagua, E (J Neurol Sci, 2016)