Current trends in radiotherapy of head and neck cancer.
D003035:Cobalt; D003037:Cobalt Radioisotopes; D006258:Head and Neck Neoplasms; D006801:Humans; D011851:Radioactivity; D011878:Radiotherapy; D011883:Radium / Q000627:therapeutic use*
D003037:Cobalt Radioisotopes; D003035:Cobalt; D011883:Radium
COBALT/radioactive; HEAD/neoplasms; NECK/neoplasms; RADIOTHERAPY; RADIUM/therapeutic use