Spinal Muscular Atrophy
Lancet 371:2120-2133, Lunn,M.R. &Wang,C.H., 2008
Levodopa and the Progression of Parkinson's Disease
NEJM 351:2498-2508, The Parkinson Study Group, 2004
Dopamine Transporter Brain Imaging to Assess the Effects of Pramipexole vs Levodopa on Parkinson Disease Progression
JAMA 287:1653-1661, Parkinson Study Group, 2002