Contraception in women over forty.
Riphagen
F E
FE
Fortney
J A
JA
Koelb
S
S
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003268:Contraception Behavior; D003270:Contraceptive Agents; D003273:Contraceptive Devices / Q000706:statistics & numerical data; D005060:Europe; D005260:Female; D006801:Humans; D008875:Middle Aged; D013245:Sterilization, Reproductive; D014481:United States
D003270:Contraceptive Agents