title: Letter: Triiodothyronine/reverse-triiodothyronine balance and thyroxine metabolism.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D013959:Thyroid Diseases / Q000097:blood / Q000378:metabolism*; D013974:Thyroxine / Q000378:metabolism*; D014284:Triiodothyronine / Q000097:blood*
chemical_list: D014284:Triiodothyronine; D013974:Thyroxine