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.
Jin H, Zhang MY, Qu OY, Wang ZY, Salmon DP, Katzman R, Grant I, Liu WT, Yu ES.Jin H, et al. Among authors: salmon dp.Psychol Aging. 1989 Dec;4(4):471-9. doi: 10.1037//0882-7974.4.4.471.Psychol Aging. 1989.PMID: 2695120
Zhang MY, Katzman R, Salmon D, Jin H, Cai GJ, Wang ZY, Qu GY, Grant I, Yu E, Levy P, et al.Zhang MY, et al.Ann Neurol. 1990 Apr;27(4):428-37. doi: 10.1002/ana.410270412.Ann Neurol. 1990.PMID: 2353798