RT Journal Article SR Electronic T1 Is all ALS genetic? JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 220 OP 221 DO 10.1212/WNL.0000000000004127 VO 89 IS 3 A1 Peter M. Andersen YR 2017 UL http://n.neurology.org/content/89/3/220.abstract AB