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.
Reyes H, Pérez-Cuevas R, Sandoval A, Castillo R, Santos JI, Doubova SV, Gutiérrez G.Reyes H, et al.BMC Public Health. 2004 Nov 30;4:57. doi: 10.1186/1471-2458-4-57.BMC Public Health. 2004.PMID: 15571622Free PMC article.
Vladislavovna Doubova Dubova S, Flores-Hernández S, Rodriguez-Aguilar L, Pérez-Cuevas R.Vladislavovna Doubova Dubova S, et al.Health Qual Life Outcomes. 2010 Feb 10;8:20. doi: 10.1186/1477-7525-8-20.Health Qual Life Outcomes. 2010.PMID: 20144238Free PMC article.