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.
Tortu S, McMahon JM, Pouget ER, Hamid R.Tortu S, et al. Among authors: hamid r.Subst Use Misuse. 2004 Jan;39(2):211-24. doi: 10.1081/ja-120028488.Subst Use Misuse. 2004.PMID: 15061559
McMahon JM, Tortu S, Torres L, Pouget ER, Hamid R.McMahon JM, et al. Among authors: hamid r.BMC Med Res Methodol. 2003 Oct 31;3:24. doi: 10.1186/1471-2288-3-24.BMC Med Res Methodol. 2003.PMID: 14594457Free PMC article.
Hamid R, Deren S, Beardsley M, Tortu S.Hamid R, et al.Subst Use Misuse. 1999 Sep;34(11):1585-92. doi: 10.3109/10826089909039416.Subst Use Misuse. 1999.PMID: 10468109