Subjects: SPERMATOZOA analysis; CONFIDENCE intervals; DIOXINSRUSSIA
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Subjects: BLOOD serum analysis; ADOLESCENCE; HYDROCARBONSRUSSIA
Subjects: CONFIDENCE intervals; HUMAN growth; LEADRUSSIA
Subjects: ANALYSIS of covariance; CONFIDENCE intervals; DIOXINSRUSSIA
Subjects: ANALYSIS of covariance; BLOOD testing; CONFIDENCE intervalsRUSSIA