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.
Khokha R, Zimmer MJ, Graham CH, Lala PK, Waterhouse P.Khokha R, et al. Among authors: graham ch.J Natl Cancer Inst. 1992 Jul 1;84(13):1017-22. doi: 10.1093/jnci/84.13.1017.J Natl Cancer Inst. 1992.PMID: 1318976
Johnson SR, Graham CH, Lysiak JJ, Lala PK.Johnson SR, et al. Among authors: graham ch.Am J Anat. 1989 May;185(1):9-18. doi: 10.1002/aja.1001850103.Am J Anat. 1989.PMID: 2782280
Irving JA, Lysiak JJ, Graham CH, Hearn S, Han VK, Lala PK.Irving JA, et al. Among authors: graham ch.Placenta. 1995 Jul;16(5):413-33. doi: 10.1016/0143-4004(95)90100-0.Placenta. 1995.PMID: 7479613