Randomized controlled trial of intraputamenal glial cell line-derived neurotrophic factor infusion in Parkinson disease

Anthony E. Lang, Steven Gill, Nik K. Patel, Andres Lozano, John G. Nutt, Richard Penn, David J. Brooks, Gary Hotton, Elena Moro, Peter Heywood, Matthew A. Brodsky, Kim Burchiel, Patrick Kelly, Arif Dalvi, Burton Scott, Mark Stacy, Dennis Turner, V. G.Frederich Wooten, William J. Elias, Edward R. LawsVijay Dhawan, A. Jon Stoessl, James Matcham, Robert J. Coffey, Michael Traub