EGILA, H.; EL-MAHDY, Z.; AZAB, A.; ABU-HEGAZY, M.; ABDEL-NABY, A. Sodium Valproate versus Propranolol in Chronic Migraine Prophylaxis. International Neuropsychiatric Disease Journal, v. 14, n. 3, p. 22-30, 2 out. 2020.