Degenerative Diseases of the Nervous System, Parkinson Disease
Adams & Victors Principles of Neurology, Chp 39, pg 1082, Ropper, A.H.,et al, 2014
Treatments of Parkinson Disease
Arch Neurol 60:1680-1684, Shults,C.W., 2003
Effect of GPi Pallidotomy on Motor Function in Parkinson's Disease
Lancet 346:1383-1387, Lozano,A.M.,et al, 1995