Epidemiology and outcome of cervical dys
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David W. Claypool; Dr. Drake D. Duane; Duane M. Ilstrup; L. Joseph Melton III
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Article
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1995
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John Wiley and Sons
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English
β 669 KB
## Abstract The natural history of cervical dystonia (spasmodic torticollis) was investigated in a populationβbased study in Rochester, Minnesota. Eleven new cases were identified with onset during the 20βyear period 1960β1979. The overall incidence rate was 1.2 per 100,000 personβyears (95% confid