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The importance of the occupational vocal load for the occurence and treatment of organic voice disorders

(%) Number of cases Percentage (%) P Polyp 38 36.9 61 46.2 0.193 Reinke’s edema 33 32.0 38 28.8 0.590 Laryngeal papillomatosis 12 11.7 7 5.3 0.076 Vocal nodules 9 8.7 9 6.8 0.780 Cyst 5 4.9 10 7.6 0.390 Chronic laryngitis 4 3.9 5 3.8 0.970 Granuloma 2 1.9 2 1.5 0.800 PVU=professional voice users, Levels I-III; NPVU=non-professional voice users, Level IV Table 3 The comparison of the risk factors for vocal fold lesion

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