Cephalalgia 2022 Sep 8;3331024221123058. doi: 10.1177/03331024221123058. Online ahead of print. Michel Lanteri-Minet, Anne Ducros , Clement Francois, Elzbieta Olewinska, Mateusz Nikodem, Laure Dupont-Benjamin Abstract Background: This meta-analysis evaluated the real-world effectiveness of onabotulinumtoxinA (BOTOX®), the first preventive treatment FDA-approved specifically for chronic migraine in 2010.
