title: Some observations concerning leukemia in twins.
mesh_terms: D004200:Diseases in Twins; D005260:Female; D006801:Humans; D007938:Leukemia / Q000209:etiology* / Q000235:genetics / Q000628:therapy; D007953:Leukemia, Radiation-Induced; D011247:Pregnancy; D014430:Twins, Monozygotic