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Title
Do children with falling blood lead levels have improved cognition?
Authors
Liu, Xianchen; Dietrich, Kim N; Radcliffe, Jerilynn; Ragan, N Beth; Rhoads, George G; Rogan, Walter J
Abstract
Exposure to lead at levels encountered by urban children impairs cognitive development. An observational study suggested improvement in IQ when blood lead level fell, but the only randomized trial of chelation showed no benefit in IQ.