| | Botulinum Toxin Found to Reduce MigrainesPHILADELPHIA — OnabotulinumtoxinA appears to be a safe, effective, and well-tolerated headache prophylactic for patients with chronic migraine. PII: S0029-7437(09)70424-0 © 2009 Elsevier Inc. All rights reserved. | |
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