Novianti, Hinda, et al. “Early Postpartum Cortisol and Malondialdehyde Trajectories in Non-Depressed Mothers: A Pilot Study in Surabaya, Indonesia”. Indonesian Journal of Medical Laboratory Science and Technology, vol. 8, no. 2, Sept. 2026, pp. 110-7, doi:10.33086/ijmlst.v8i2.8139.