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.
Demas GE, Klein SL, Nelson RJ.Demas GE, et al. Among authors: klein sl.J Comp Physiol A. 1996 Dec;179(6):819-25. doi: 10.1007/BF00207360.J Comp Physiol A. 1996.PMID: 8956499
Klein SL, Hairston JE, Devries AC, Nelson RJ.Klein SL, et al.Horm Behav. 1997 Aug;32(1):30-9. doi: 10.1006/hbeh.1997.1402.Horm Behav. 1997.PMID: 9344689Free article.