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.
Alwashmi M, Hawboldt J, Davis E, Marra C, Gamble JM, Abu Ashour W.Alwashmi M, et al.JMIR Mhealth Uhealth. 2016 Sep 1;4(3):e105. doi: 10.2196/mhealth.5921.JMIR Mhealth Uhealth. 2016.PMID: 27589898Free PMC article.
Johnston KM, Marra CA, Connors JM, Najafzadeh M, Sehn L, Peacock SJ.Johnston KM, et al. Among authors: marra ca.Value Health. 2010 Sep-Oct;13(6):703-11. doi: 10.1111/j.1524-4733.2010.00737.x. Epub 2010 Jun 7.Value Health. 2010.PMID: 20561333Free article.
Najafzadeh M, Johnston KM, Peacock SJ, Connors JM, Marra MA, Lynd LD, Marra CA.Najafzadeh M, et al. Among authors: marra ca, marra ma.BMC Health Serv Res. 2013 Oct 31;13:454. doi: 10.1186/1472-6963-13-454.BMC Health Serv Res. 2013.PMID: 24176050Free PMC article.