
Keywords: γ-hexachlorocyclohexane; β-HCH; β-hexachlorocyclohexane; DDE; 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene; DDT; 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane; γ-HCH; γ-hexachlorocyclohexane; HCB; hexachlorobenzene; LIFE Study; Longitudinal Investigation of Fertility and the