[Premature labor and its prevention during pregnancy].
D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008423:Maternal Age; D007752:Obstetric Labor, Premature / Q000209:etiology / Q000517:prevention & control*; D010923:Placenta Previa / Q000150:complications; D006831:Polyhydramnios / Q000150:complications; D011247:Pregnancy; D011248:Pregnancy Complications; D011295:Prenatal Care
Die Frühgeburt und ihre Verhinderung während der Schwangerschaft.