%0 Journal Article %T The Use and Misuse of the Sensitive Thyrotropin Assays %A NICOLOFF, JOHN, T. %A SPENCER, CAROLE, A. %J Journal of Clinical Endocrinology and Metabolism %V 71 %N 3 %P 553-558 %@ 0021-972X %D 1990-09-01 %I Endocrine Society %~ DeepDyve