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.
Yu YQ, Chen PY.Yu YQ, et al. Among authors: chen py.Zhongguo Dang Dai Er Ke Za Zhi. 2024 May 15;26(5):518-522. doi: 10.7499/j.issn.1008-8830.2309145.Zhongguo Dang Dai Er Ke Za Zhi. 2024.PMID: 38802914Review.Chinese.