Columbia subject headings:
Birth control--Nigeria--Imo State.
Birth control--Nigeria--Ondo State.
Men--Sexual behavior--Nigeria--Imo State.
Men--Sexual behavior--Nigeria--Ondo State.
Sexual behavior surveys--Nigeria--Ondo State.
Harvard subject headings:
Birth control--Nigeria--Ondo State.
Family planning--Nigeria--Ondo State.
Men--Nigeria--Ondo State--Sexual behavior.
Men--Sexual behavior--Nigeria--Ondo State.
Sexual behavior surveys--Nigeria--Ondo State.
Princeton subject headings: