1. The quiet revolution that transformed women's employment, education, and family;Goldin;Am Econ Rev,2006
2. Births in the United States, 2016;Martin;NCHS Data Brief,2017
3. Births: Provisional data for 2016. Vital statistics rapid release; no 2;Hamilton,2017
4. Short interpregnancy intervals in the United States;Gemmill;Obstet Gynecol,2013
5. Interpregnancy interval and the risk of premature infants;Fuentes-Afflick;Obstet Gynecol,2000