title: Improved survival with adjuvant external-beam radiation therapy in lymph node-negative pancreatic cancer: a United States population-based assessment.
authors.forename: David Z
authors.initials: DZ
authors.lastname: Chu
mesh_terms: D006801:Humans; D008207:Lymphatic Metastasis; D010190:Pancreatic Neoplasms / Q000401:mortality* / Q000532:radiotherapy; D018714:Radiotherapy, Adjuvant; D016019:Survival Analysis; D014481:United States