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.
Tabak ER, Mullen PD, Simons-Morton DG, Green LW, Mains DA, Eilat-Greenberg S, Frankowski RF, Glenday MC.Tabak ER, et al. Among authors: mullen pd.Eval Health Prof. 1991 Dec;14(4):388-411. doi: 10.1177/016327879101400402.Eval Health Prof. 1991.PMID: 10120958