[Vaginal smears and premature labor].
D000028:Abortion, Induced / Q000517:prevention & control*; D000022:Abortion, Spontaneous; D005260:Female; D006801:Humans; D007752:Obstetric Labor, Premature; D011247:Pregnancy; D014626:Vaginal Smears
ABORTION/prevention and control; VAGINAL SMEARS/in pregnancy