1. United Nations, Department of Economic and Social Affairs, Population Division (2013), World contraceptive Patterns, 2013.
2. Contraceptive failure in the United States;Trussell;Contraception,2011
3. Contraceptive failure rates in France: results from a population-based survey;Moreau;Hum Reprod,2007
4. Frequency of discontinuation of contraceptive use: results from a French population-based cohort;Moreau;Hum Reprod,2009
5. Sponge versus diaphragm for contraception;Kuyoh;Cochrane Database Syst Rev,2002