Study for Determine the Safety and Efficacy of Clostridium Botulinum Toxin Type A in Subjects With Cervical Dystonia

The purpose of this study is to determine the Optimal dose for safety and efficacy in the treatment of cervical dystonia.

Inclusion Criteria:

• Male or female aged 18~75
• Have no clinically significant medical condition
• Cervical dystonia

Exclusion Criteria:

• Pregnant or lactation
• Subjects who have been administered the following drugs within the previous 1 month