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.
Lin WC, Lin YS, Chang CW, Chang CW, Wang TE, Wang HY, Chen MJ.Lin WC, et al. Among authors: chang cw.PLoS One. 2020 May 22;15(5):e0233212. doi: 10.1371/journal.pone.0233212. eCollection 2020.PLoS One. 2020.PMID: 32442193Free PMC article.Clinical Trial.
Chen CJ, Chang WH, Shih SC, Wang TE, Chang CW, Chen MJ.Chen CJ, et al. Among authors: chang cw, chang wh.J Formos Med Assoc. 2009 Jan;108(1):61-8. doi: 10.1016/S0929-6646(09)60033-4.J Formos Med Assoc. 2009.PMID: 19181609Free article.