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Ballard CG, Thomas A, Fossey J, Lee L, Jacoby R, Lana MM, Bannister C, McShane R, Swann A, Juszczak E, O'Brien JT.Ballard CG, et al.J Clin Psychiatry. 2004 Jan;65(1):114-9. doi: 10.4088/jcp.v65n0120.J Clin Psychiatry. 2004.PMID: 14744180Clinical Trial.