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.
Popper H, Thomas LB.Popper H, et al.Ann N Y Acad Sci. 1975 Jan 31;246:172-94. doi: 10.1111/j.1749-6632.1975.tb51093.x.Ann N Y Acad Sci. 1975.PMID: 1054951
Thomas LB, Popper H.Thomas LB, et al. Among authors: popper h.Ann N Y Acad Sci. 1975 Jan 31;246:268-77. doi: 10.1111/j.1749-6632.1975.tb51102.x.Ann N Y Acad Sci. 1975.PMID: 1054961
Thomas LB, Popper H, Berk PD, Selikoff I, Falk H.Thomas LB, et al. Among authors: popper h.N Engl J Med. 1975 Jan 2;292(1):17-22. doi: 10.1056/NEJM197501022920104.N Engl J Med. 1975.PMID: 1167315