Behavior of serum thyroglobulin in relation to thyroid function under low-thyrotropin conditions in general practice. - Sazumi Y; Soejima Y; Otsuka Y; Nakano Y; Yamamoto K; Suyama A; Takase R; Oguni K; Yasuda M; Furukawa M; Otsuka F (Frontiers in endocrinology, 2026)