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Journal
J Headache Pain
Volume
12
Issue
3
Pages
315-22
Publication year
2011
Suggested citation
Hagen K, Albretsen C, Vilming ST, Salvesen R, Grønning M, Helde G, Gravdahl G, Zwart JA, Stovner LJ. A 4-year follow-up of patients with medication-overuse headache previously included in a randomized multicentre study. J Headache Pain. 2011; 12(3): 315-22.