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.
Lingard L, McDougall A, Levstik M, Chandok N, Spafford MM, Schryer C.Lingard L, et al. Among authors: schryer c.Med Educ. 2012 Sep;46(9):869-77. doi: 10.1111/j.1365-2923.2012.04339.x.Med Educ. 2012.PMID: 22891907
Spafford MM, Schryer CF, Lingard L.Spafford MM, et al. Among authors: schryer cf.Commun Med. 2008;5(2):183-94. doi: 10.1558/cam.v5i2.183.Commun Med. 2008.PMID: 19736656
Spafford MM, Lingard L, Schryer CF, Hrynchak PK.Spafford MM, et al.Optom Vis Sci. 2004 Oct;81(10):800-6. doi: 10.1097/00006324-200410000-00013.Optom Vis Sci. 2004.PMID: 15557855