Haidar N. Mohammed, Ayad Ahmad Mohammed and Mohammed Abdulameer Algumrawi (2021) “Open Cholecystectomy in Respiratory and Cardiovascular disease patients under Lumbar combined Spinal-Epidural Anesthesia”, Zanco Journal of Pure and Applied Sciences, 33(2), pp. 67–75. doi: 10.21271/ZJPAS.33.2.7.