title: The design of a second cobalt 60 unit, based on the experience acquired with 1,000 patients treated with the first unit.
mesh_terms: D003035:Cobalt; D003037:Cobalt Radioisotopes; D006801:Humans; D009369:Neoplasms / Q000532:radiotherapy*
chemical_list: D003037:Cobalt Radioisotopes; D003035:Cobalt
keywords: COBALT/radioactive; NEOPLASMS/radiotherapy