Ahmed, F., M. Tahir, Q. T. Uddin, E. A. Khan, N. B. Tahir, S. sardar, and B. Ahmad. “ULTRASONOGRAGHY: A GOOD AID TO THE CLINICAL DIAGNOSIS OF ACUTE APPENDICITIS”. KHYBER MEDICAL UNIVERSITY JOURNAL, vol. 4, no. 4, Dec. 2012, pp. 165-9, https://www.kmuj.kmu.edu.pk/article/view/10183.