An online survey among singers and singing teachers by the USC Voice Center.
The survey assesses the use of B12 treatment in singers.
The estimated time for answering the survey is 2-4 minutes.
Just click here!
It Takes Only 3 Minutes
If you are unable to use the above link, please copy the following URL to your browser:
For more information, please leave a message on the following phone number and we’ll contact you:
(213) 986-7464 or (213) 986-SING