RT Journal Article SR Electronic T1 Did parkinsonism occur before 1817? JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 11 OP 12 DO 10.1136/jnnp.52.Suppl.11 VO 52 IS Suppl A1 G Stern YR 1989 UL http://jnnp.bmj.com/content/52/supplement/11.abstract AB