Abstract
Lead (Pb) is widely known as a ubiquitous and highly toxic metal to human health. In Brazil, there are scarce data on the extension of Pb contamination in the general population, especially for the most vulnerable population, composed of preschool children. In the previous study funded by FAPESP (2011/13076-0, 2011/23272-0 and 2012/21840-4), venous blood samples of 2,463 children attendin…