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.
Leung CC, Chan K, Yam WC, Lee MP, Chan CK, Wong KH, Ho PL, Mak I, Tam CM.Leung CC, et al. Among authors: yam wc.Respirology. 2016 Oct;21(7):1322-9. doi: 10.1111/resp.12805. Epub 2016 Apr 28.Respirology. 2016.PMID: 27121551
Leung CC, Yam WC, Ho PL, Yew WW, Chan CK, Law WS, Lee SN, Chang KC, Tai LB, Tam CM.Leung CC, et al. Among authors: yam wc.Respirology. 2015 Apr;20(3):496-503. doi: 10.1111/resp.12483. Epub 2015 Feb 17.Respirology. 2015.PMID: 25689894