title: Serial plasma progesterone levels at the approach of labour.
mesh_terms: D005260:Female; D006801:Humans; D007745:Labor Onset; D007743:Labor, Obstetric; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D011374:Progesterone / Q000097:blood*; D013997:Time Factors
chemical_list: D011374:Progesterone