Proposals for a programmed prevention policy of preterm birth.
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007752:Obstetric Labor, Premature / Q000175:diagnosis / Q000209:etiology / Q000517:prevention & control*; D010353:Patient Education as Topic; D005082:Physical Exertion; D011247:Pregnancy; D011295:Prenatal Care; D012306:Risk; D012959:Socioeconomic Factors