Fig. 2From: Administrative prevalence and incidence, characteristics and prescription patterns of patients with migraine in Germany: a retrospective claims data analysisFlow chart of the identification of eligible patients with migraine in the German Company Sickness Fund database (CSFD) 2008 to 2016. ICD-10-GM International Classification of Diseases, 10th revision, German modification; M2Q ‘Mindestens zwei [2] Quartale’, which translates to ‘at least two [2] quarters’Back to article page