Haidar N. Mohammed, Ayad Ahmad Mohammed, and Mohammed Abdulameer Algumrawi. “Open Cholecystectomy in Respiratory and Cardiovascular Disease Patients under Lumbar Combined Spinal-Epidural Anesthesia”. Zanco Journal of Pure and Applied Sciences 33, no. 2 (April 15, 2021): 67–75. Accessed March 10, 2025. https://zancojournal.su.edu.krd/index.php/JPAS/article/view/1940.