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.
Cummings KM, Sciandra R, Lawrence J.Cummings KM, et al.Public Health Rep. 1991 Sep-Oct;106(5):570-5.Public Health Rep. 1991.PMID: 1910192Free PMC article.
Cummings KM, Sciandra R, Gingrass A, Davis R.Cummings KM, et al.Am J Public Health. 1991 Jul;81(7):894-6. doi: 10.2105/ajph.81.7.894.Am J Public Health. 1991.PMID: 2053667Free PMC article.
Skretny MT, Cummings KM, Sciandra R, Marshall J.Skretny MT, et al. Among authors: cummings km.N Y State J Med. 1990 Feb;90(2):54-5.N Y State J Med. 1990.PMID: 2304661