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.
Spencer JC, Gertner AK, Silberman PJ.Spencer JC, et al.N C Med J. 2019 Sep-Oct;80(5):269-275. doi: 10.18043/ncm.80.5.269.N C Med J. 2019.PMID: 31471506Free PMC article.
Wheeler SB, Spencer J, Rotter J.Wheeler SB, et al.N C Med J. 2018 Jan-Feb;79(1):62-65. doi: 10.18043/ncm.79.1.62.N C Med J. 2018.PMID: 29439109Free article.
Spencer JC, Rotter JS, Eberth JM, Zahnd WE, Vanderpool RC, Ko LK, Davis MM, Troester MA, Olshan AF, Wheeler SB.Spencer JC, et al.J Natl Cancer Inst. 2020 Jun 1;112(6):647-650. doi: 10.1093/jnci/djz197.J Natl Cancer Inst. 2020.PMID: 31599949Free PMC article.