RT Journal Article SR Electronic T1 Head injury and Alzheimer’s disease JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 841 OP 841 DO 10.1136/jnnp.74.7.841 VO 74 IS 7 A1 J T L Wilson YR 2003 UL http://jnnp.bmj.com/content/74/7/841.abstract AB