RT Journal Article SR Electronic T1 Caffeine for treatment of Parkinson disease: A randomized controlled trial JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 1744 OP 1744 DO 10.1212/WNL.0b013e31827026ef VO 79 IS 16 YR 2012 UL http://n.neurology.org/content/79/16/1744.2.abstract AB