1. Tarrago O, Brown MJ Case studies in environmental medicine (CSEM): lead toxicity, what are routes of exposure to lead? [Internet]. Atlanta, GA: Agency for Toxic Substances and Disease Registry; 2017 [cited 2018 Jan 16]. p. 37– 41. Available from: https://www.atsdr.cdc.gov/csem/lead/docs/CSEM-Lead_toxicity_508.pdf
2. NTP monograph: health effects of low-level lead evaluation [Internet]. Research Triangle Park, NC: National Toxicology Program; 2012 [cited 2018 Jan 16]. 148 p. Available from: https://ntp.niehs.nih.gov/ntp/ohat/lead/final/monographhealtheffectslowlevellead_newissn_508.pdf
3. The relationship between blood lead levels and morbidities among workers employed in a factory manufacturing lead–acid storage battery