Pengaturan kelahiran: Perbedaan antara revisi

 

==Metode==

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|+Chance of pregnancy during first year of use:<ref name=Hopkins2010/><ref name=CDC2013>{{cite journal|last=Division of Reproductive Health, National Center for Chronic Disease Prevention and Health|first=Promotion|title=U.s. Selected practice recommendations for contraceptive use, 2013: adapted from the world health organization selected practice recommendations for contraceptive use, 2nd edition.|journal=MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports / Centers for Disease Control|date=2013 Jun 21|volume=62|issue=RR-05|pages=1-60|pmid=23784109|url=http://www.cdc.gov/mmwr/preview/mmwrhtml/rr6205a1.htm?s_cid=rr6205a1_w}}</ref>