RT Journal Article SR Electronic T1 Cholinesterase inhibitors for treatment of dementia associated with Parkinson’s disease JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 903 OP 904 DO 10.1136/jnnp.2004.061499 VO 76 IS 7 A1 J L Cummings YR 2005 UL http://jnnp.bmj.com/content/76/7/903.abstract AB