RT Journal Article SR Electronic T1 Reporting null results and advancing science JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 827 OP 828 DO 10.1212/WNL.0000000000007400 VO 92 IS 18 A1 Petty, Sandra J. A1 Gross, Robert A. YR 2019 UL http://n.neurology.org/content/92/18/827.abstract AB