TY - JOUR T1 - Friedman et al reply JF - Journal of Neurology, Neurosurgery & Psychiatry JO - J Neurol Neurosurg Psychiatry SP - 890 LP - 890 DO - 10.1136/jnnp.47.8.890 VL - 47 IS - 8 A2 - , Y1 - 1984/08/01 UR - http://jnnp.bmj.com/content/47/8/890.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -