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.
Cross CK, Hirschfeld RM.Cross CK, et al.Ann N Y Acad Sci. 1986;487:77-89. doi: 10.1111/j.1749-6632.1986.tb27887.x.Ann N Y Acad Sci. 1986.PMID: 3471166No abstract available.
Secunda SK, Cross CK, Koslow S, Katz MM, Kocsis JH, Maas JW.Secunda SK, et al. Among authors: cross ck.Ann N Y Acad Sci. 1986;487:231-42. doi: 10.1111/j.1749-6632.1986.tb27902.x.Ann N Y Acad Sci. 1986.PMID: 2436536No abstract available.