Long-term contraception by steroid-releasing implants. II. A preliminary report on long-term contraception by a single silastic implant containing norethindrone acetate (ENTA) in women.
D000328:Adult; D002214:Capsules; D003267:Contraception; D004343:Drug Implants; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008598:Menstruation / Q000187:drug effects; D008599:Menstruation Disturbances / Q000139:chemically induced; D009640:Norethindrone / Q000009:adverse effects / Q000494:pharmacology*; D012826:Silicone Elastomers
D002214:Capsules; D004343:Drug Implants; D012826:Silicone Elastomers; D009640:Norethindrone