Meyers JL, Davis KL, Lenz RA, Sakai F, Xue F. Treatment patterns and characteristics of patients with migraine in Japan: a retrospective analysis of health insurance claims data. Cephalalgia. 2019 Oct;39(12):1518-34. doi: 10.1177/0333102419851855
Matharu M, Pascual J, Nisson Remahl I, Straube A, Lum A, Davar G, Odom D, Bennett L, Proctor C, Gutierrez L, Andrews E, Johannes C. Utilization and safety of onabotulinumtoxinA for the prophylactic treatment of chronic migraine from an observational study in Europe. Cephalalgia. 2017 Dec;37(14):1384-97. doi: 10.1177/0333102417724150