Persistence of and changes in neuropsychiatric symptoms in Alzheimer disease over 6 months: the LASER-AD study.
Am J Geriatr Psychiatry. 2005 Nov;13(11):976-83. doi: 10.1176/appi.ajgp.13.11.976.
Am J Geriatr Psychiatry. 2005.
PMID: 16286441