Septiadi, Nadra, et al. “Effectiveness of Subcutaneous Bupivacaine–Ketamine Wound Infiltration in Reducing Post-Cesarean Section Pain: A Randomized, Double-Blind, Controlled Trial”. Frontiers on Healthcare Research, vol. 3, no. 2, Aug. 2026, pp. 12-21, https://doi.org/10.63918/fhr.v3.n2.p12-21.2026.