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Voice is a work tool for many professional groups. Currently, cases of dysphonia of multiple origin consist a growing issue. Voice disorders may result from disturbed voice production process, congenital defects, post-traumatic conditions, chronic diseases or hormonal disorders. Chronic diseases causing voice disorders include laryngopharyngeal reflux disease and esophageal reflux disease. The chronic character of reflux causes the formation of numerous morphological changes of the larynx,doi:10.36740/wlek202004137 fatcat:fbgda3vnwvdptkl2zceafqajju