[Telecobalt therapy of esophageal cancer].
D000368:Aged; D003036:Cobalt Isotopes / Q000627:therapeutic use*; D004938:Esophageal Neoplasms / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011867:Radioisotope Teletherapy
D003036:Cobalt Isotopes