title: Proton Therapy for Breast Cancer: Getting to the Heart of the Matter.
authors.affiliation: Francis H. Burr Proton Therapy Center, Massachusetts General Hospital, Boston, Massachusetts. Electronic address: smacdonald@partners.org.
authors.forename: Shannon M
authors.initials: SM
authors.lastname: MacDonald
mesh_terms: D001943:Breast Neoplasms / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis / Q000532:radiotherapy*; D035441:Thoracic Wall