Baratloo, A., S. A. Bafarani, M. M. Forouzanfar, B. Hashemi, B. W. Friedman, and A. Abdalvand. “Intravenous Caffeine Versus Intravenous Ketorolac for the Management of Moderate to Severe Migraine Headache”. Bangladesh Journal of Pharmacology, vol. 11, no. 2, Apr. 2016, pp. 428-32, doi:10.3329/bjp.v11i2.26333.