Treatment of Advanced Parkinson's Disease by Posterior GPi Pallidotomy:1-Year Results of a Pilot Study
Ann Neurol 40:355-366, 3411996., Baron,M.S.,et al, 1996
Nonmotor Fluctuations in Patients with Parkinson's Disease
Neurol 47:1180-1183, Hillen,M.E.&Sage,J.I., 1996