RT Journal Article SR Electronic T1 Evaluation of safety and efficacy of levodopa in Parkinson's disease and syndrome JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 3 OP 16 DO 10.1212/WNL.22.5_Part_2.3 VO 22 IS 5 Part 2 A1 Harrison M. Langrall A1 Clifford Joseph YR 1972 UL http://n.neurology.org/content/22/5_Part_2/3.abstract AB