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.
Gorstein J, Sullivan K, Yip R, de Onís M, Trowbridge F, Fajans P, Clugston G.Gorstein J, et al. Among authors: trowbridge f.Bull World Health Organ. 1994;72(2):273-83.Bull World Health Organ. 1994.PMID: 8205648Free PMC article.
Yip R, Parvanta I, Scanlon K, Borland EW, Russell CM, Trowbridge FL.Yip R, et al. Among authors: trowbridge fl.MMWR CDC Surveill Summ. 1992 Nov 27;41(7):1-24.MMWR CDC Surveill Summ. 1992.PMID: 1484523