RT Journal Article SR Electronic T1 Surgery for Parkinson's disease. JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 2 OP 8 DO 10.1136/jnnp.62.1.2 VO 62 IS 1 A1 Obeso, J A A1 Guridi, J A1 Obeso, J A A1 DeLong, M YR 1997 UL http://jnnp.bmj.com/content/62/1/2.abstract AB