EFFECTS OF PERCHLORATE IN DRINKING WATER

Comparisons of Free T4 by city of residence are shown in Table IV. Adjusted for the same factors, average Free T4 was higher among Chañaral and Taltal children compared to Antofagasta children, and these differences were highly significant whether based on all children or lifelong residents (P(0.01 for Chañaral, P ................
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