Funding for this research was provided by:
National Institute on Deafness and Other Communication Disorders (R21_DC014432)
National Institute of General Medical Sciences (R24_GM120464)
Directorate for Biological Sciences (NSF_143602)
Received: 6 November 2017
Accepted: 2 March 2018
First Online: 3 April 2018
Ethics approval and consent to participate
: All procedures involving animals conformed to NIH guidelines for the use and care of animals in research and were approved by OHSU’s Institutional Animal Care Use Committee (IACUC).
: Not applicable.
: The authors declare that they have no competing interests.
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