The dynamics of contraceptive use: an overview.
Tsui
A O
AO
Carolina Population Center, University of North Carolina, Chapel Hill.
D003267:Contraception / Q000379:methods* / Q000706:statistics & numerical data; D003268:Contraception Behavior / Q000523:psychology / Q000706:statistics & numerical data* / Q000639:trends; D006801:Humans; D012106:Research