Mayan, O., Marques, L., Duarte, R., Henriques, A., Bastos, A., Alves, D. and Calheiros, J. 1994. Children and lead exposure. Preliminary study. Acta Médica Portuguesa. 7, 11 (Nov. 1994), 607–10. DOI:https://doi.org/10.20344/amp.2985.