Study Comparing Short Term Efficacy of Dysport and Dysport NG to Placebo, and to Assess Efficacy and Safety of Dysport NG of Subjects With Cervical Dystonia

Open-label Extension Study of AbobotulinumtoxinA (Dysport®) for the Treatment of Cervical Dystonia

Randomized, Placebo-Controlled Study of AbobotulinumtoxinA (Dysport®) for the Treatment of Cervical Dystonia

Long Term Safety And Effectiveness Of Dysport® In Adults With Cervical Dystonia

Efficacy and Safety of DYSPORT® Using 2mL Dilution in Adults With Cervical Dystonia.

Study to Assess the Efficacy and Safety of Dysport® in Cervical Dystonia