The Role of Biomarkers Pituitary Adenylate Cyclase-Activating Polypeptide (PACAP) and Vasoactive Intestinal Peptide (VIP) in Chronic and Episodic Migraines: A Meta-Analysis

Figure 1

PRISMA flow diagram: the PRISMA diagram includes details of our search algorithm and study selection based on the inclusion and exclusion criteria. PRISMA: Preferred Reporting Items for Systematic Review and Meta-analyses.