RT Journal Article SR Electronic T1 Ataxin-2 expands insight into the ALS clinical spectrum JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 224 OP 225 DO 10.1212/WNL.0000000000001167 VO 84 IS 3 A1 Bonini, Nancy M. A1 Hardiman, Orla YR 2015 UL http://n.neurology.org/content/84/3/224.abstract AB