Supplemental material for Risk of cardiovascular and cerebrovascular events and mortality in patients with migraine receiving prophylactic treatments: An observational cohort study

Supplemental Material for Risk of cardiovascular and cerebrovascular events and mortality in patients with migraine receiving prophylactic treatments: An observational cohort study by Veena Hoffman, Fei Xue, Stephen M Ezzy, Akeem Yusuf, Edward Green, Osa Eisele, Tobias Kurth and John D Seeger in Cephalalgia