Aya Mohammed Mahros, Eman Mohammad Saied, Abdel Atty Ibrahem Abdelatty, Mohammed Khorshid and Hassan Elsayed El batea 2023. Narrow band imaging as a noninvasive tool for evaluation of the severity of inflammation in patients with ulcerative colitis in Kafr-El-Sheikh university, Egypt. Journal of the Pakistan Medical Association. 73, 4 (May 2023), S72-S77. DOI:https://doi.org/10.47391/JPMA.EGY-S4-16.