[Considerations on cobalt teletherapy of cancer of the esophagus].
D003035:Cobalt; D003036:Cobalt Isotopes; D004938:Esophageal Neoplasms; D006801:Humans; D009369:Neoplasms; D011867:Radioisotope Teletherapy
D003036:Cobalt Isotopes; D003035:Cobalt
COBALT ISOTOPES; ESOPHAGEAL NEOPLASMS; RADIOISOTOPE TELETHERAPY