title: Cobalt therapy: when and why.
mesh_terms: D003036:Cobalt Isotopes / Q000627:therapeutic use*; D006689:Hodgkin Disease / Q000532:radiotherapy; D006801:Humans; D009369:Neoplasms / Q000532:radiotherapy; D011882:Radiotherapy, High-Energy
chemical_list: D003036:Cobalt Isotopes