title: [Preventive therapy of central nervous system leukemia in children. I. Technical problems in cranial irradiation with telecobalt unit (author's transl)].
mesh_terms: D002648:Child; D003037:Cobalt Radioisotopes / Q000008:administration & dosage*; D006801:Humans; D007938:Leukemia / Q000517:prevention & control*; D007945:Leukemia, Lymphoid / Q000532:radiotherapy; D008577:Meningeal Neoplasms / Q000517:prevention & control*; D011879:Radiotherapy Dosage; D012886:Skull
chemical_list: D003037:Cobalt Radioisotopes