RT Journal Article SR Electronic T1 Contact X-Ray Therapy for Superficial Lesions JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 74 OP 81 VO 15 IS 2 A1 Portmann, U. V. YR 1948 UL http://www.ccjm.org/content/15/2/74.abstract AB