RT Journal Article SR Electronic T1 Changes in the Fundus Oculi in Relation to Hypertension JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 139 OP 149 VO 22 IS 4 A1 Lockhart, George YR 1955 UL http://www.ccjm.org/content/22/4/139.abstract AB