title: Therapeutic irradiation of the chest and electrocardiographic changes.
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D003036:Cobalt Isotopes; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000528:radiation effects*; D006331:Heart Diseases / Q000209:etiology; D006801:Humans; D008297:Male; D008408:Mastectomy; D008875:Middle Aged; D011882:Radiotherapy, High-Energy / Q000009:adverse effects*
chemical_list: D003036:Cobalt Isotopes