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• 1. Carmienke S, Holle-Lee D. Triage in case of headache in general practice: When to refer? Dtsch Med Wochenschr 2019;144(10):651–8.
• 2. Gaul C, Visscher CM, Bhola R, Sorbi MJ, Galli F, Rasmussen AV, et al. Team players against headache: Multidisciplinary treatment of primary headaches and medication overuse headache. J Headache Pain 2011;12(5):511–9.
• 3. Bhola R, Goadsby PJ. A trans-cultural comparison of the organisation of care at headache centres world-wide. Cephalalgia 2011;31(3):316–30