title: Contraception in the later reproductive years: a valid aspect of preventive health care.
authors.forename: L
authors.initials: L
authors.lastname: Speroff
authors.forename: P J
authors.initials: PJ
authors.lastname: Sulak
mesh_terms: D000367:Age Factors; D000569:Americas; D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003710:Demography; D019049:Developed Countries; D005193:Family Planning Services; D007434:Intrauterine Devices; D017258:Medroxyprogesterone Acetate; D009656:North America; D011153:Population; D011154:Population Characteristics; D013245:Sterilization, Reproductive; D014481:United States
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D017258:Medroxyprogesterone Acetate
keywords: Age Factors; Americas; Contraception; Contraceptive Agents; Contraceptive Agents, Female; Contraceptive Agents, Progestin; Contraceptive Implants; Contraceptive Methods; Demographic Factors; Depo-provera; Developed Countries; Family Planning; Female Contraception; Female Sterilization; Iud; Medroxyprogesterone Acetate; North America; Northern America; Oral Contraceptives; Population; Population Characteristics; Sterilization, Sexual; United States