J Rhinol 2021;28(3):158-163 | https://doi.org/10.18787/jr.2021.00378
We would like to correct the IRB number and Funding Statement as written below.
This study was conducted after being reviewed and approved by the Institutional Review Board (IRB) of the Dong-a University Hospital (approval number: DAUHIRB 21-101). The informed consents were waived because the study was conducted retrospectively based on medical records.