Gemzell-Danielsson Kristina, Lalitkumar P G L, Berger Cecilia
Department of Women's and Children's Health, Division of Obstetrics and Gynecology, Karolinska Institutet, Karolinska University Hospital, Stockholm 171 76, Sweden.
Contraception. 2013 Oct;88(4):581-2. doi: 10.1016/j.contraception.2013.04.007. Epub 2013 May 2.