Evaluation of Surgery for Parkinson's Disease, A Report of the Therapeutics and Technology Assessment Subcommittee of the AAN
Neurol 53:1910-1921, Hallett,M.,et al, 1999
Human Fetal Dopamine Neurons Grafted Into the Striatum in Two Patients with Severe Parkinson's 6-Mo Follow-up
Arch Neurol 46:615-631, Lindvall,O.,et al, 1989