RT Journal Article SR Electronic T1 Carotid and vertebral artery disease JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 848 OP 848 DO 10.1212/WNL.12.12.848 VO 12 IS 12 A1 D. A. McGee A1 R. S. McPhedran A1 H. J. Hoffman YR 1962 UL http://n.neurology.org/content/12/12/848.abstract AB