RT Journal Article SR Electronic T1 RESEARCH ON THE CEREBRAL CIRCULATION JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 421 OP 421 DO 10.1136/jnnp.35.3.421 VO 35 IS 3 A1 Jennett, Bryan YR 1972 UL http://jnnp.bmj.com/content/35/3/421.1.abstract AB