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.
Tsang HHL, Cheung JPY, Wong CKH, Cheung PWH, Lau CS, Chung HY.Tsang HHL, et al.Arthritis Res Ther. 2019 Jan 30;21(1):41. doi: 10.1186/s13075-019-1826-x.Arthritis Res Ther. 2019.PMID: 30700326Free PMC article.
Chen Y, Chung HY, Zhao CT, Wong A, Zhen Z, Tsang HH, Lau CS, Tse HF, Yiu KH.Chen Y, et al.Rheumatology (Oxford). 2015 Feb;54(2):292-301. doi: 10.1093/rheumatology/keu337. Epub 2014 Aug 29.Rheumatology (Oxford). 2015.PMID: 25173350