| http://www.w3.org/ns/prov#value | - The 355 children included in our analysis differed somewhat from the 131 who were excluded because of missing covariates; children with missing covariates were more likely to be from Boston, be of Hispanic and other races, have lower socio-economic status and birthweights, and have slightly higher hair Hg and blood lead levels.Table 1Associations between hair mercury levels and demographic and oth
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