RT Journal Article SR Electronic T1 Leonardo da Vinci 1452-1519. JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 786 DO 10.1136/jnnp.54.9.786 VO 54 IS 9 A1 L F Haas YR 1991 UL http://jnnp.bmj.com/content/54/9/786.abstract AB