Comparison of BLL in pregnancy.

Studies shown are those published from 2000 onwards only where there was no specific source of environmental lead exposure and the participants were not resident in major cities in developing countries (developing/developed countries were defined according to the International Monetary Fund definition [51]).For studies reporting BLL during pregnancy in which the author identified a specific source of environmental lead exposure and/or participants lived in a major city in a developing country, see Table S7.aMedian; bgeometric mean; cstandard error; values in parentheses are ranges.