
Rates and outcomes of planned pregnancy after use of Norplant capsules, Norplant II rods, or levonorgestrel-releasing or copper TCu 380Ag intrauterine contraceptive devices.
Am J Obstet Gynecol. 1992 Apr;
166(
4):
1208-13.
PMID: 1566771 [PubMed - indexed for MEDLINE]