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Roberts JS, Blow FC, Copeland LA, Barry KL, Van Stone W.Roberts JS, et al. Among authors: copeland la.J Geriatr Psychiatry Neurol. 2000 Summer;13(2):78-86. doi: 10.1177/089198870001300206.J Geriatr Psychiatry Neurol. 2000.PMID: 10912729