Relation of maternal cardiac volume to infant maturity.
D000886:Anthropometry; D001811:Blood Volume Determination; D001827:Body Height; D001830:Body Surface Area; D001835:Body Weight; D005260:Female; D005333:Fetus; D006321:Heart / Q000000981:diagnostic imaging*; D006334:Heart Function Tests; D006801:Humans; D008431:Maternal-Fetal Exchange; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011187:Posture; D011247:Pregnancy; D011859:Radiography