RT Journal Article SR Electronic T1 Irradiation in the Treatment of Cancer of the Breast JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 109 OP 115 VO 6 IS 2 A1 Portmann, U. V. YR 1939 UL http://www.ccjm.org/content/6/2/109.abstract AB