title: [Preoperative irradiation with betatron electron beam in gastric cancer].
mesh_terms: D004583:Electrons; D005472:Fluorouracil / Q000627:therapeutic use; D006801:Humans; D011300:Preoperative Care; D011838:Radiation-Sensitizing Agents; D011882:Radiotherapy, High-Energy; D013274:Stomach Neoplasms / Q000473:pathology / Q000532:radiotherapy*
chemical_list: D011838:Radiation-Sensitizing Agents; D005472:Fluorouracil