title: A 4-year follow-up study of women with Norplant-2 contraceptive implants.
abstract: One-hundred-thirty of 178 women who received Norplant-2 implants were followed prospectively for 4 years. Menstrual disorders were the most common reason for discontinuation. Only one patient conceived, for a failure rate of 0.6%.
authors.affiliation: Shanghai Institute of Planned Parenthood Research, Shanghai, People's Republic of China.
authors.forename: L H
authors.initials: LH
authors.lastname: Qin
authors.forename: J M
authors.initials: JM
authors.lastname: Goldberg
authors.forename: G
authors.initials: G
authors.lastname: Hao
mesh_terms: D000328:Adult; D003271:Contraceptive Agents, Female / Q000009:adverse effects / Q000627:therapeutic use*; D004343:Drug Implants / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016912:Levonorgestrel / Q000009:adverse effects / Q000627:therapeutic use*; D008597:Menstrual Cycle / Q000187:drug effects; D012826:Silicone Elastomers / Q000009:adverse effects / Q000627:therapeutic use; D013997:Time Factors
chemical_list: D003271:Contraceptive Agents, Female; D004343:Drug Implants; D012826:Silicone Elastomers; D016912:Levonorgestrel