Parkinson's Disease
Lancet 363:1783-1793, Samii,A.,et al, 2004
Parkinson's Disease
NEJM 339:1044-1053,1130-1143, Lang,A.E.&Lozano,A.M., 1998
Parkinsonism-Recognition and Differential Diagnosis
BMJ 310:447-452, Quinn,N., 1995
Preclinical Detection of Parkinson's Disease
Neurology Suppl 2, 41:5-921991., Koller,W.C.&Langston,J.W., 1991