Columbia subject headings:
Pregnant women--Tobacco use--Colorado--Prevention.
Pregnant women--Tobacco use--Missouri--Prevention.
Smoking cessation--Curricula--Colorado.
Smoking cessation--Curricula--Missouri.
Harvard subject headings:
Pregnant women--Tobacco use--Colorado--Prevention.
Pregnant women--Tobacco use--Missouri--Prevention.
Smoking cessation--Curricula--Colorado.
Smoking cessation--Curricula--Missouri.
Princeton subject headings: