Singh, Tarun D Neuropsychiatric symptoms in primary progressive aphasia and apraxia of speech. [electronic resource] - Dementia and geriatric cognitive disorders 2015 - 228-38 p. digital Publication Type: Journal Article; Research Support, N.I.H., Extramural ISSN: 1421-9824 Standard No.: 10.1159/000369062 doi Subjects--Topical Terms: AgedAphasia, Primary Progressive--classificationApraxias--psychologyBehavioral Symptoms--etiologyDiagnosis, DifferentialDisease ProgressionFemaleHumansMaleMiddle AgedMood Disorders--etiologyNeuropsychological TestsProspective Studies