RT Journal Article SR Electronic T1 MATTERS ARISING JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 861 OP 861 DO 10.1136/jnnp.55.9.861-a VO 55 IS 9 A1 A K Purohit A1 I Dinakar A1 C Sundaram A1 K S Ratnakar YR 1992 UL http://jnnp.bmj.com/content/55/9/861.2.abstract AB