Fig. 1From: Understanding the nature of psychiatric comorbidity in migraine: a systematic review focused on interactions and treatment implicationsFlowchart of study selection. Figure 1 includes all the relevant steps and main results of the literature search upon the main topic. The most relevant studies have been selected in accordance with the PRISMA guidelines. Specifically, observational studies, clinical trials, open label studies, systematic reviews, guidelines, commentaries, editorials, and letters to editors focusing on the review topic were includedBack to article page