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Investigators from Pacific Northwest Evidence-based Practice Center and Oregon Health & Science University conducted a systematic review on the effects of lead screening, testing, and treatment of elevated levels in children ≤5 years old. The systematic review was designed to answer 6 key questions: (a) What is the evidence that screening for elevated blood lead levels (BLLs) improves health outcomes?; (b) What is the accuracy of screening questionnaires or capillary BLLs in identifying children with venous levels ≥10 mg/dL?; (c) What are the harms of screening?; (d) What are the effects of counseling, nutritional interventions, residential lead hazard control techniques, or chelation to reduce BLLs?; (e) Do these interventions …
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