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.
Day JR, Smith ML, Erenberg G, Collins RL.Day JR, et al. Among authors: smith ml.HEC Forum. 1994 Jan;6(1):18-30. doi: 10.1007/BF01456252.HEC Forum. 1994.PMID: 10132022No abstract available.