RT Journal Article SR Electronic T1 Accuracy of clinical diagnosis of idiopathic Parkinson's disease. JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 938 OP 939 DO 10.1136/jnnp.56.8.938 VO 56 IS 8 A1 D R Rajput YR 1993 UL http://jnnp.bmj.com/content/56/8/938.abstract AB