Leukemia, Radiation-InducedNuclear ReactorsLeukemiaRadioactive WasteAir Pollutants, RadioactivePrecursor Cell Lymphoblastic Leukemia-LymphomaUkrainePaternal ExposurePower PlantsRadioactive FalloutInfant, NewbornLeukemia, LymphoidInfectionElectromagnetic FieldsQuackeryEnvironmental ExposureExplosive AgentsLymphoma, Non-HodgkinMagnetic FieldsWalesIncidenceChild Day Care CentersFathersEngland6-MercaptopurineDiphtheria ToxoidLeukemia, Myeloid, AcuteRisk FactorsCase-Control StudiesNeoplasms, Radiation-InducedRemission, SpontaneousAccidentsThioguanineRadiation DosageScotlandFranceGreat BritainResidence CharacteristicsHaemophilus VaccinesAge FactorsOccupationsRural PopulationRiskRegistriesPrenatal Exposure Delayed EffectsRural HealthOdds RatioAcute DiseaseSocial ClassFinlandPregnancyFollow-Up StudiesCluster AnalysisLeukemia, MyeloidRisk AssessmentEuropeChild AbuseAdult Survivors of Child AbuseLeukemia, ExperimentalChild Abuse, SexualLeukemia, Lymphocytic, Chronic, B-CellSurvivorsNeoplasmsCohort StudiesAsparaginaseLeukemia Inhibitory FactorChild DevelopmentTime FactorsTreatment OutcomeBone MarrowDaunorubicinParentsLongitudinal StudiesLeukemia, Myelogenous, Chronic, BCR-ABL PositiveLeukemia, Monocytic, AcuteAntineoplastic AgentsRetrospective StudiesLymphomaLeukemia Virus, BovineAsthmaLeukocyte CountSex FactorsAge of OnsetPrevalenceCytarabineSocioeconomic FactorsQuestionnairesObesityPrognosisLeukemia, B-CellLeukemia, T-CellProspective StudiesRecurrenceBone Marrow ExaminationMethotrexateLeukemia, Hairy CellBody HeightMothersBenzeneUnited States