TY - JOUR T1 - Free triiodothyronine has a distinct circadian rhythm that is delayed but parallels thyrotropin levels. JO - J Clin Endocrinol Metab PY - 2008/06/01 AU - Russell W AU - Harrison RF AU - Smith N AU - Darzy K AU - Shalet S AU - Weetman AP AU - Ross RJ ED - DO - DOI: 10.1210/jc.2007-2674 VL - 93 IS - 6 SP - 2300 EP - 2306 Y2 - 2025/05/01 ER -