Double-blind, placebo-controlled, crossover study of duodenal infusion of levodopa/carbidopa in Parkinson's disease patients with 'on-off' fluctuations.
Kurth MC, Tetrud JW, Tanner CM, Irwin I, Stebbins GT, Goetz CG, Langston JW. Double-blind, placebo-controlled, crossover study of duodenal infusion of levodopa/carbidopa in Parkinson's disease patients with 'on-off' fluctuations. Neurology. 1993 Sep; 43(9):1698-703.