An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Kang Y, Ku EJ, Jung IG, Kang MH, Choi YS, Jung HJ.Kang Y, et al. Among authors: choi ys.Medicine (Baltimore). 2021 Jan 15;100(2):e24122. doi: 10.1097/MD.0000000000024122.Medicine (Baltimore). 2021.PMID: 33466183Free PMC article.Clinical Trial.
Song JJ, Ku EJ, Kim S, Kim E, Choi YS, Jung HJ.Song JJ, et al. Among authors: choi ys.Clin Exp Otorhinolaryngol. 2021 Feb;14(1):82-87. doi: 10.21053/ceo.2020.00283. Epub 2020 Jul 27.Clin Exp Otorhinolaryngol. 2021.PMID: 32734740Free PMC article.
Park KH, Lee SH, Koo JW, Park HY, Lee KY, Choi YS, Oh KW, Lee A, Yang JE, Woo SY, Kim SW, Cho YS.Park KH, et al. Among authors: choi ys.J Epidemiol. 2014;24(5):417-26. doi: 10.2188/jea.je20140024. Epub 2014 Jun 21.J Epidemiol. 2014.PMID: 24953134Free PMC article.