Disparities by race/ethnicity in unplanned cesarean birth among healthy nulliparas: a secondary analysis of the nuMoM2b dataset. - Carlson, Nicole S.; Carlson, Madelyn S.; Erickson, Elise N.; Higgins, Melinda; Britt, Abby J.; Amore, Alexis Dunn (BMC Pregnancy & Childbirth, 2023)