Pratyusha, A. C., S. Nikhar, C. R. K. Prasad, and R. Gopinath. “Emergent Management of a Case With Acute Sub-Dural Hematoma Post Mechanical Mitral Valve Replacement on Warfarin Therapy”. Anaesthesia, Pain & Intensive Care, Jan. 2019, pp. 102-4, https://apicareonline.com/index.php/APIC/article/view/147.