At the time the article was created Mohammed Wahba had no recorded disclosures.
View Mohammed Wahba's current disclosuresAt the time the article was last revised Daniel J Bell had no recorded disclosures.
View Daniel J Bell's current disclosuresThe Guttman test is a clinical test relating to the function of the larynx.
In normal subjects, frontal pressure on the thyroid cartilage lowers the tone of voice produced and lateral pressure produces a higher tone of voice. The opposite is true with paralysis of the cricothyroid muscle.
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