RT Journal Article SR Electronic T1 Calendar JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 2140 OP 2141 DO 10.1212/WNL.0b013e3181ad48f4 VO 72 IS 24 YR 2009 UL http://n.neurology.org/content/72/24/2140.abstract AB