Disparities in Access to the Northwest Ambulance Service during pregnancy, birth and postpartum period and its association with neonatal and maternal outcomes [DiAAS]: a retrospective cohort study and qualitative framework analysis. - Heys, Stephanie; Pegler, Daisy; Elahi, Anam; Heazell, Alexander E P; Watson, Kylie; Hope, Holly; Fullwood, Cathrine; Soltani, Hora (BMC Pregnancy & Childbirth, 2025)