1. U.S. Department of Health and Human Services. Healthy people 2030 objectives & data – family planning. Available from: health.gov/healthypeople/objectives-and-data/browse-objectives/family-planning/reduce-proportion-pregnancies-conceived-within-18-months-previous-birth-fp-02 (accessed January 2021).
2. Interpregnancy care;Obstet Gynecol.,2019
3. Re-evaluation of link between interpregnancy interval and adverse birth outcomes: retrospective cohort study matching two intervals per mother;Ball;BMJ.,2014
4. Within-family analysis of interpregnancy interval and adverse birth outcomes;Class;Obstet Gynecol.,2017
5. Interpregnancy interval and adverse pregnancy outcomes: an analysis of successive pregnancies;Hanley;Am J Obstet Gynecol.,2017