Investigation of Blood Lead Level and Analysis of Heritability in Twins Aged 6 -14 Years in Ji’ning City,Shandong Province,China / 环境与健康杂志

ABSTRACT

Objective To know the blood lead level among twins in Ji’ning,Shandong province,China and to assess the genetic and environmental influence on blood lead level of children. Methods A total of 144 pairs of same sex twins aged 6-14 years were randomly selected in June,2008,and their blood lead level was determined and assessed into three groups,namely the relatively safe group (blood lead level