Subclinical hypothyroidism (SH) is defined by normal free triiodothyronine (fT3) and free thyroxine (fT4) levels, elevated thyroid-stimulating hormone levels, and the absence of overt clinical signs of hypothyroidism. The natural course of SH is influenced by the underlying etiology. The purpose of this study was to evaluate the etiologic causes of SH.
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Yaşar et al. (2024) studied this question.
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