Investig of PDRG of UK into Excess Mortality Seen/Comb Levodopa & Selegiline Trmt in Pts with Early, Mild Parkinson's Dis
BMJ 316:1191-1196, Ben-Shlomo,Y.,et al, 1998
Drug Treatment of Parkinson's Disease
BMJ 310:575-579, Quinn,N., 1995
Considerations in the Management of Parkinsonism
Neurol 28:5, Fahn,S.,et al, 1978