Al-Sarraf, Salem A.H., Safa M. Al-Obaidi, and Muqdad F.A. Al-karim. “Abdominal Operations Without Nasogastric Tube :A Major Advance in Modern Surgery”. Journal of the Faculty of Medicine Baghdad 50, no. 3 (October 1, 2008): 303–307. Accessed May 4, 2024. https://iqjmc.uobaghdad.edu.iq/index.php/19JFacMedBaghdad36/article/view/1246.