title: Changes in the circadian rhythm of serum thyrotropin in aged subjects.
mesh_terms: D000368:Aged; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D008297:Male; D008433:Mathematics; D012016:Reference Values; D013972:Thyrotropin / Q000097:blood*
chemical_list: D013972:Thyrotropin