Prevention of prematurity.
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007234:Infant, Premature; D007615:Kansas; D008427:Maternal Health Services; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011247:Pregnancy; D011295:Prenatal Care