Columbia subject headings:
Alcoholism in pregnancy.
Drug abuse in pregnancy.
Pregnant women--Alcohol use.
Pregnant women--Drug use.
Prenatal care.
Harvard subject headings:
Alcoholism in pregnancy.
Drug abuse in pregnancy.
Pregnant women--Alcohol use.
Pregnant women--Drug use.
Prenatal care.
Princeton subject headings:
Alcoholism in pregnancy.
Drug abuse in pregnancy.
Pregnant women--Alcohol use.
Pregnant women--Drug use.
Prenatal care.