Kareem, T. S., N. Y. Ahmed, and S. S. Hussein. “Accuracy of Modified Alvarado Scoring System in Early Diagnosis of Acute Appendicitis”. Zanco Journal of Medical Sciences (Zanco J Med Sci), vol. 13, no. 2, Aug. 2009, pp. 8-13, doi:10.15218/zjms.2009.013.