https://www.selleckchem.com/pr....oducts/sodium-l-lact
In patients with Parkinson's Disease, the Finger Kazoo with glissando technique promoted an increase in the minimum fundamental frequency of the SRP and in the vocal extensions of women, as well as increasing the maximum phonatory time of men. In addition, patients reported satisfaction with the use of the technique and its results. In patients with Parkinson's Disease, the Finger Kazoo with glissando technique promoted an increase in the minimum fundamental frequency of the SRP and in the vocal extensions of women, as well as
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