title: Cancer of the thoracic oesophagus: two series of patients treated by 22 MeV betatron.
mesh_terms: D004938:Esophageal Neoplasms / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D008297:Male; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy