title: Serum thyroid hormone levels in patients on thyroxine replacement therapy.
mesh_terms: D000328:Adult; D000368:Aged; D006801:Humans; D007037:Hypothyroidism / Q000097:blood / Q000188:drug therapy*; D008875:Middle Aged; D013974:Thyroxine / Q000097:blood / Q000627:therapeutic use*; D014284:Triiodothyronine / Q000097:blood*
chemical_list: D014284:Triiodothyronine; D013974:Thyroxine