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APA Citation
Wilbrink, L. A., Weller, C. M., Cheung, C., Haan, J., & Ferrari, M. D. (2013). cluster‐Tic Syndrome: A Cross‐Sectional Study of Cluster Headache Patients. Headache, 53(8), 1334–1340. http://access.bl.uk/ark:/81055/vdc_100042690846.0x000063