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Jakubowski M, Levy D, Goor-Aryeh I, Collins B, Bajwa Z, Burstein R.Jakubowski M, et al. Among authors: levy d.Headache. 2005 Jul-Aug;45(7):850-61. doi: 10.1111/j.1526-4610.2005.05153.x.Headache. 2005.PMID: 15985101Clinical Trial.
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Bree D, Levy D.Bree D, et al. Among authors: levy d.Cephalalgia. 2018 Feb;38(2):246-258. doi: 10.1177/0333102416681571. Epub 2016 Dec 7.Cephalalgia. 2018.PMID: 27899434Free PMC article.