PRENATAL CARE AND PREMATURITY.
D000375:Aging; D044383:Black People; D004219:District of Columbia; D004467:Economics; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D011247:Pregnancy; D011248:Pregnancy Complications; D011295:Prenatal Care; D013223:Statistics as Topic; D044465:White People; D001741:Black or African American
AGING; CAUCASIAN RACE; DISTRICT OF COLUMBIA; ECONOMICS; INFANT, NEWBORN; INFANT, PREMATURE; NEGROES; PREGNANCY; PREGNANCY COMPLICATIONS; PRENATAL CARE; STATISTICS