title: Letter: Diurnal variation of plasma-unconjugated-oestradiol in late pregnancy.
mesh_terms: D001800:Blood Specimen Collection; D002940:Circadian Rhythm; D004958:Estradiol / Q000097:blood*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D013997:Time Factors
chemical_list: D004958:Estradiol