RT Journal Article SR Electronic T1 Genetic determinants of disease severity in the myotonic dystrophy type 1 OPTIMISTIC cohort JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 459 OP 459 DO 10.1212/WNL.0000000000008715 VO 94 IS 10 YR 2020 UL http://n.neurology.org/content/94/10/459.3.abstract AB