Abstract
Lead (Pb) is widely known to be a ubiquitous metal and highly toxic to human health. In Brazil, there are few data on the extention of Pb contamination in the general population, especially in the most vulnerable population composed by preschool children. In a previous and funded by FAPESP study (Process 2011/13076-0, 2011/23272-0 and 2012/21840-4), venous blood was collected of 2,397 chi…