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.
Steptoe A, Wardle J, Smith H, Kopp M, Skrabski A, Vinck J, Zotti AM.Steptoe A, et al.Addiction. 1995 Apr;90(4):571-82. doi: 10.1046/j.1360-0443.1995.90457111.x.Addiction. 1995.PMID: 7773120
van den Akker O, Steptoe A.van den Akker O, et al. Among authors: steptoe a.Psychosom Med. 1989 May-Jun;51(3):319-28. doi: 10.1097/00006842-198905000-00006.Psychosom Med. 1989.PMID: 2734424
Steptoe A, Kearsley N, Walters N.Steptoe A, et al.Psychophysiology. 1993 May;30(3):245-52. doi: 10.1111/j.1469-8986.1993.tb03350.x.Psychophysiology. 1993.PMID: 8497553Clinical Trial.