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.
Chang TC, Chen CC, Wang MY, Yang CY, Lin MT.Chang TC, et al.J Laparoendosc Adv Surg Tech A. 2011 Apr;21(3):215-20. doi: 10.1089/lap.2010.0054. Epub 2011 Jan 23.J Laparoendosc Adv Surg Tech A. 2011.PMID: 21254869
Wang TH, Kiu KT, Yen MH, Chang TC.Wang TH, et al. Among authors: chang tc.Sci Rep. 2020 Mar 23;10(1):5189. doi: 10.1038/s41598-020-62141-5.Sci Rep. 2020.PMID: 32251336Free PMC article.