[Statistical evaluation of esophageal cancer radiotherapy (author's transl)].
D000368:Aged; D001918:Brachytherapy; D004938:Esophageal Neoplasms / Q000401:mortality / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D011300:Preoperative Care; D011879:Radiotherapy Dosage; D011897:Random Allocation