Holt Kelsey, Dehlendorf Christine, Langer Ana
Women and Health Initiative, Department of Global Health and Population, Harvard T.H. Chan School of Public Health, 651 Huntington Avenue, Boston, MA 02115, USA.
Departments of Family & Community Medicine, Obstetrics, Gynecology & Reproductive Sciences, and Epidemiology & Biostatistics, University of California San Francisco, 500 Parnassus Avenue, MUE3, San Francisco, CA 94143, USA.
Contraception. 2017 Sep;96(3):133-137. doi: 10.1016/j.contraception.2017.06.005. Epub 2017 Jun 20.