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.
Ou Y, Grossman DS, Lee PP, Sloan FA.Ou Y, et al.Ophthalmic Epidemiol. 2012 Oct;19(5):285-92. doi: 10.3109/09286586.2011.649228.Ophthalmic Epidemiol. 2012.PMID: 22978529Free PMC article.
Ayyagari P, Grossman D, Sloan F.Ayyagari P, et al. Among authors: grossman d.Int J Health Care Finance Econ. 2011 Mar;11(1):35-54. doi: 10.1007/s10754-010-9087-x. Epub 2011 Jan 7.Int J Health Care Finance Econ. 2011.PMID: 21213044Free PMC article.