Funding for this research was provided by:
National Institute on Deafness and Other Communication Disorders (ZIA-DC000087)
National Cancer Institute (Intramural Funding)
Received: 21 February 2019
Accepted: 23 April 2019
First Online: 3 May 2019
Ethics approval and consent to participate
: This study was approved by the National Cancer Institute (NCI) Institution Review Board and the National Institutes of Health Clinical Center (NCT02859454), and informed consent was obtained from all patients.
: Full consent for the publication of patient demographics and endoscopic images was obtained.
: The authors declare that they have no competing interests.
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