AgranulocytosisAntithyroid AgentsMethimazoleLevamisoleClozapineDrug ContaminationPropylthiouracilVeterinary DrugsPhenylbutazoneDibenzazepinesChlorpropamideGraves DiseaseHLA-B38 AntigenCohort StudiesAntinematodal AgentsAcecainideDipyroneGlutethimideHypochlorous AcidMeprobamateAnemia, AplasticLeukopeniaUnited States Public Health ServicePancytopeniaChlorpromazineDrug-Related Side Effects and Adverse ReactionsPyridonesBone MarrowAmodiaquineNew MexicoGranulocyte Colony-Stimulating FactorBone Marrow ExaminationAntipsychotic AgentsNeutropeniaHyperthyroidismDrug MonitoringLeukocyte CountPeroxidaseCocaine