From the Departments of Neurology and Pharmacology, Uniersity of Pittsburgh, and the Geriatric Research, Educational and Clinical Center, A Pittsburgh Health Care System, Pittsburgh, Pa.

• 来自匹兹堡大学神经学和药理学系及宾州匹兹堡退伍军人管理局匹兹堡卫生保健系统老年病学研究教育与临床中心。