RT Journal Article SR Electronic T1 Lymphatic Leukemia Occurring Simultaneously in Negro Brother and Sister JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 33 OP 34 VO 18 IS 1 A1 Portmann, U. V. A1 Robinson, W. H. YR 1951 UL http://www.ccjm.org/content/18/1/33.abstract AB