Parkinsons Disease
Lancet 373:2055-2066, Lees,A.J.,et al, 2009
Diagnosis and Initial Management of Parkinsons Disease
NEJM 353:1021-1027, Nutt,J.G.&Wooten,G.F., 2005
Parkinson's Disease
NEJM 339:1044-1053,1130-1143, Lang,A.E.&Lozano,A.M., 1998
Parkinson's Disease
JNNP 57:672-681, Marsden,C.D., 1994