Multilevel exposure to adversity across the life course and biological implications among urban postpartum women: A cohort study protocol - Anne Elizabeth Glassgow; Claire Flanigan; Anahi A. Gante Gaytan; Sage Kim; Aiman Soliman; Rachel Caskey; Almudena Veiga-Lopez; Irina A. Buhimschi; Amanda Knepper; Hagar Hallihan; Alicia Arredondo Eve; Sofija Jovanovic Gasovic; et al. (PLoS ONE, 2026)