Thyroid metabolism in the elderly.
D000367:Age Factors; D000368:Aged; D006801:Humans; D007037:Hypothyroidism / Q000188:drug therapy*; D008875:Middle Aged; D013961:Thyroid Gland / Q000378:metabolism*; D013974:Thyroxine / Q000008:administration & dosage* / Q000627:therapeutic use
D013974:Thyroxine