Childhood leukemia in California-born twins.
D000293:Adolescent; D000367:Age Factors; D001722:Birth Order; D001724:Birth Weight; D002140:California; D002648:Child; D002675:Child, Preschool; D004200:Diseases in Twins / Q000453:epidemiology*; D005260:Female; D005333:Fetus / Q000528:radiation effects; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007938:Leukemia / Q000453:epidemiology* / Q000209:etiology / Q000235:genetics* / Q000401:mortality; D008297:Male; D009381:Neoplasms, Radiation-Induced; D011247:Pregnancy; D012737:Sex Factors