RT Journal Article SR Electronic T1 Intellectual impairment in the aged JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 349 OP 349-a DO 10.1212/WNL.30.4.349-a VO 30 IS 4 A1 K. York Haaland A1 Gary Rosenberg YR 1980 UL http://n.neurology.org/content/30/4/349.2.abstract AB