[Apropos of accidents following cobalt therapy].
D000059:Accidents; D003035:Cobalt; D003037:Cobalt Radioisotopes; D004938:Esophageal Neoplasms; D006801:Humans
D003037:Cobalt Radioisotopes; D003035:Cobalt
COBALT/radioactive; ESOPHAGUS/neoplasms