HCB quartiles 3 and 4 were associated with approximately 5 months later TV ≥ 20 mL compared with the lowest quartile, with a significant trend.
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Prepubertal Serum Concentrations of Organochlorine Pesticides and Age at Sexual Maturity in Russian Boys.
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The sentences
However, in models including both HCB and βHCH, associations for HCB were attenuated and remained significant only for Tanner stage 5 for pubic hair growth; associations for βHCH were markedly attenuated for all maturity markers, and none approached significance.