Editorial: I.P.P.F. at twenty-one.
D000028:Abortion, Induced / Q000295:instrumentation; D000293:Adolescent; D000328:Adult; D003267:Contraception; D003270:Contraceptive Agents / Q000008:administration & dosage; D003273:Contraceptive Devices / Q000600:supply & distribution; D003276:Contraceptives, Oral / Q000600:supply & distribution; D005193:Family Planning Services; D005260:Female; D006801:Humans; D007247:Infertility, Female; D007248:Infertility, Male; D007390:International Agencies; D008297:Male; D008875:Middle Aged; D009654:Norsteroids / Q000008:administration & dosage; D010044:Outpatient Clinics, Hospital; D011247:Pregnancy; D012736:Sex Education; D014837:Voluntary Health Agencies
D003270:Contraceptive Agents; D003276:Contraceptives, Oral; D009654:Norsteroids