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.
Dunn J, Laranjeira RR, Da Silveira DX, Formigoni ML, Ferri CP.Dunn J, et al.Subst Use Misuse. 1996 Mar;31(4):519-27. doi: 10.3109/10826089609045824.Subst Use Misuse. 1996.PMID: 8851815
Ferri CP, Laranjeira RR, da Silveira DA, Dunn J, Formigoni ML.Ferri CP, et al.Rev Assoc Med Bras (1992). 1997 Jan-Mar;43(1):25-8. doi: 10.1590/s0104-42301997000100007.Rev Assoc Med Bras (1992). 1997.PMID: 9224988Portuguese.