Efficacy and safety of botulinum type A toxin (Dysport) in cervical dystonia: results of the first US randomized, double-blind, placebo-controlled study. Movement Disorders 2005;20:783-791.
Truong, D, DD Duane, J Jankovic, C Singer, LC Seeberger, CL Comella, MF Lew, et al. 2005. “Efficacy and Safety of Botulinum Type A Toxin (Dysport) in Cervical Dystonia: Results of the First US Randomized, Double-Blind, Placebo-Controlled Study. Movement Disorders 2005;20:783-791.”. Movement Disorders.