Efficacy, tolerability, and immunogenicity of onabotulinumtoxina in a randomized, double-blind, placebo-controlled trial for cervical dystonia - Charles, D; Brashear, A; Hauser, R A; Li, H I; Boo, L M; Brin, M F (Clin Neuropharmacol, 2012)
; CD 140 Study Group.