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.
Voils C, Hassselblad V, Crandell J, Chang Y, Lee E, Sandelowski M.Voils C, et al. Among authors: chang y.J Health Serv Res Policy. 2009 Oct;14(4):226-33. doi: 10.1258/jhsrp.2009.008186.J Health Serv Res Policy. 2009.PMID: 19770121Free PMC article.
Sandelowski M, Voils CI, Chang Y, Lee EJ.Sandelowski M, et al. Among authors: chang y.AIDS Care. 2009 Aug;21(8):953-66. doi: 10.1080/09540120802626212.AIDS Care. 2009.PMID: 20024751Free PMC article.Review.
Burtscher V, Wang L, Cowgill J, Chen ZW, Edge C, Smith E, Chang Y, Delemotte L, Evers AS, Chanda B.Burtscher V, et al. Among authors: chang y.Sci Adv. 2025 Jan 3;11(1):eadr7427. doi: 10.1126/sciadv.adr7427. Epub 2025 Jan 3.Sci Adv. 2025.PMID: 39752505