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Chone, Carlos T.; Seixas, Vinícius Oliveira; Andreollo, Nelson A.; Quagliato, Elizabeth; Barcelos, Irene H. K.; Spina, Ana L.; Crespo, Agrício N. Computerized manometry use to evaluate spasm in pharyngoesophageal segment in patients with poor tracheoesophageal speech before and after treatment with botulinum toxin. Revista Brasileira de Otorrinolaringologia, 2009, vol.75, n. 2, ISSN 0034-7299.