The NORPLANT contraceptive method: a report on three years of use.
D000293:Adolescent; D000328:Adult; D001938:Brazil; D002677:Chile; D002986:Clinical Trials as Topic; D003267:Contraception / Q000379:methods*; D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage / Q000009:adverse effects; D004293:Dominican Republic; D004343:Drug Implants; D005260:Female; D005387:Finland; D006801:Humans; D007563:Jamaica; D016912:Levonorgestrel; D009644:Norgestrel / Q000008:administration & dosage* / Q000009:adverse effects; D009645:Norgestrienone / Q000008:administration & dosage; D011247:Pregnancy; D011897:Random Allocation
D003277:Contraceptives, Oral, Combined; D004343:Drug Implants; D009644:Norgestrel; D016912:Levonorgestrel; D009645:Norgestrienone