1. Late recognition of pregnancy as a predictor of adverse birth outcomes;Ayoola;Am J Obstet Gynecol,2009
2. First trimester medication abortion practice in the United States and Canada;Jones;PLoS One,2017
3. Social Science Oral Abstracts: trends in self-pay costs and insurance acceptance for abortion across the United States, 2017 to 2020;Upadhyay;Contraception,2021
4. Incidence of emergency department visits and complications after abortion;Upadhyay;Obstet Gynecol,2015
5. A Surge in Bans on Abortion as Early as Six Weeks, Before most people know they are pregnant. Guttmacher Institute 2019. https://www.guttmacher.org/article/2019/03/surge-bans-abortion-early-six-weeks-most-people-know-they-are-pregnant (Accessed June 14, 2021).