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Roy, Nelson | Case-control study of risk factors for spasmodic dysphonia: a comparison with other voice disorders | Objectives: This epidemiology study examined risk factors uniquely associated with spasmodic dysphonia (SD). Study Design: Case-control. Methods: A questionnaire was administered to 150 patients with SD (with and without coexisting vocal tremor) and 136 patients with other structural, neurological, ... | 2012-01-01 |
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