[Self care for pregnant women. pH-determination prevents premature labor].
D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007231:Infant, Newborn; D007752:Obstetric Labor, Premature / Q000209:etiology / Q000517:prevention & control*; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000175:diagnosis*; D012307:Risk Factors; D012648:Self Care; D014621:Vagina