1. Low-level lead exposure and the IQ of children. A meta-analysis of modern studies;Needleman HL;JAMA.,1990
2. Low-level environmental lead exposure and children's intellectual function: an international pooled analysis;Lanphear BP;Environ Health Perspect.,2005
3. CDC 2005. Preventing Lead Poisoning in Young Children: A Statement by the Centers for Disease Control and Prevention. 5th Revision. Atlanta GA: Centers for Disease Control and Prevention. Available: http://www.cdc.gov/nceh/lead/publications/PrevLeadPoisoning.pdf. Accessed 26 July 2008.
4. Blood lead concentrations < 10 µg/dL and child intelligence at 6 years of age;Jusko TA;Environ Health Perspect.,2008
5. CDC 1991. Preventing Lead Poisoning in Young Children: A Statement by the Centers for Disease Control and Prevention. Available at: http://www.cdc.gov/nceh/ lead/publications/books/plpyc/contents. htm. Accessed July 26 2008.