1. [ATSDR] U.S. Agency for Toxic Substances and Disease Registry. 2007. Toxicological profile for lead. [accessed 2019 Mar 4]. https://www.atsdr.cdc.gov/toxprofiles/tp13.pdf
2. An assessment of the Hazards of lead in food
3. [CDC] U.S. Centers for Disease Control and Prevention. 2015. What we eat in America, DHHS-USDA dietary survey integration. [accessed 2019 Mar 4]. https://www.cdc.gov/nchs/nhanes/wweia.htm.
4. [CDC] U.S. Centers for Disease Control and Prevention. 2017. What do parents need to know to protect their children? [accessed 2019 March 4]. https://www.cdc.gov/nceh/lead/acclpp/blood_lead_levels.htm.
5. [CDC] U.S. Centers for Disease Control and Prevention, Advisory Committee on Childhood Lead Poisoning Prevention. 2012. Low level lead exposure harms children: a renewed call for primary prevention. [accessed 2019 March 4]. https://www.cdc.gov/nceh/lead/acclpp/final_document_030712.pdf.