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.
Moore E, Blatt K, Chen A, Van Hook J, DeFranco EA.Moore E, et al. Among authors: chen a.Am J Perinatol. 2016 May;33(6):560-8. doi: 10.1055/s-0035-1570319. Epub 2015 Dec 21.Am J Perinatol. 2016.PMID: 26692202Free PMC article.
Li R, Ware J, Chen A, Nelson JM, Kmet JM, Parks SE, Morrow AL, Chen J, Perrine CG.Li R, et al. Among authors: chen j, chen a.Lancet Reg Health Am. 2022 Jan;5:100094. doi: 10.1016/j.lana.2021.100094.Lancet Reg Health Am. 2022.PMID: 35911656Free PMC article.
Ware JL, Li R, Chen A, Nelson JM, Kmet JM, Parks SE, Morrow AL, Chen J, Perrine CG.Ware JL, et al. Among authors: chen j, chen a.Am J Prev Med. 2023 Nov;65(5):763-774. doi: 10.1016/j.amepre.2023.05.015. Epub 2023 May 21.Am J Prev Med. 2023.PMID: 37220859
Blatt K, Moore E, Chen A, Van Hook J, DeFranco EA.Blatt K, et al. Among authors: chen a.Obstet Gynecol. 2015 Jun;125(6):1452-1459. doi: 10.1097/AOG.0000000000000679.Obstet Gynecol. 2015.PMID: 26000517Free PMC article.
Moore E, Blatt K, Chen A, Van Hook J, DeFranco EA.Moore E, et al. Among authors: chen a.Am J Obstet Gynecol. 2016 Jul;215(1):109.e1-6. doi: 10.1016/j.ajog.2016.01.167. Epub 2016 Jan 28.Am J Obstet Gynecol. 2016.PMID: 26827877Free PMC article.