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.
Chen LY, Liu LK, Liu CL, Peng LN, Lin MH, Chen LK, Lan CF, Chang PL.Chen LY, et al. Among authors: chen lk.J Am Med Dir Assoc. 2013 Apr;14(4):309.e9-13. doi: 10.1016/j.jamda.2013.01.017.J Am Med Dir Assoc. 2013.PMID: 23541137