Qureshi, O. A., Shehab Beg, Shahab Ghani, Asad Waqar, Tooba Malik, & Mohsin Anwer. (2026). The role of systemic unfractionated heparin in free flap surgery outcomes: A retrospective study from a tertiary care hospital in Karachi, Pakistan. Journal of the Pakistan Medical Association, 76(8), 1248–1251. https://doi.org/10.47391/JPMA.22651