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Central and peripheral mechanisms in chronic tension-type headache.
Lipchik GL, Holroyd KA, France CR, Kvaal SA, Segal D, Cordingley GE, Rokicki LA, McCool HR. Lipchik GL, et al. Among authors: france cr. Pain. 1996 Mar;64(3):467-475. doi: 10.1016/0304-3959(95)00174-3. Pain. 1996. PMID: 8783311 Free PMC article. Clinical Trial.
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