Surbakti, Khairul Putra, and Hasan Sjahrir. 2021. “The Effect of Flunarizine Prophylactic Treatment on Headache Frequency and Plasma Glutamate Levels in Chronic Tension-Type Headache Patients”. Open Access Macedonian Journal of Medical Sciences 9 (T3):223-27. https://doi.org/10.3889/oamjms.2021.6304.