Tekin, Erdal, Mehmet Koçak, Kamber Kaşali, and Atıf Bayramoğlu. 2020. “Acute Treatment Comparison of Primary Headache Patients Admitted to Emergency Department: A Prospective Randomized Controlled Study”. International Journal of Innovative Research and Reviews 4 (1), 8-13. http://www.injirr.com/article/view/49.