RT Journal Article SR Electronic T1 Chronic Urticaria and Angioneurotic Edema JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 147 OP 151 VO 7 IS 2 A1 Johnston, C. R. K. YR 1940 UL http://www.ccjm.org/content/7/2/147.abstract AB