Botulinum Toxin for the Treatment of Migraine and Other Primary Headache Disorders July 2005 in “ CME: Your SA Journal of CPD ” Johan A. Smuts We don't know much about this study yet. We're maintaining the world's largest resposity of hair loss research. You can help out the community by sending a PDF of this study here . Not sure how to get a study's PDF? You can email the authors of the study. View this study on journals.co.za →