Perry EK, Curtis M, Dick DJ, Candy JM, Atack JR, Bloxham CA, Blessed G, Fairbairn A, Tomlinson BE, Perry RH.
Cholinergic correlates of cognitive impairment in Parkinson's disease: comparisons with Alzheimer's disease.J Neurol Neurosurg Psychiatry.
1985 May;48(5):413-21.
PubMed Abstract