title: Elective internal mammary node irradiation: it is not an all or nothing question.
authors.forename: L B
authors.initials: LB
authors.lastname: Marks
authors.forename: L R
authors.initials: LR
authors.lastname: Prosnitz
mesh_terms: D001943:Breast Neoplasms / Q000532:radiotherapy*; D005260:Female; D006335:Heart Injuries / Q000209:etiology*; D006801:Humans; D008198:Lymph Nodes; D011832:Radiation Injuries / Q000209:etiology*