El Shafie, O., D. Sankhla, N. Al-Kindy, A. Al-Hamadani, C. Grant, and N. Woodhouse. “Insulinoma: A Rare Cause of a Common Metabolic Disorder - Hypoglycaemia”. Sultan Qaboos University Medical Journal, vol. 8, no. 1, Mar. 2008, pp. 63-67, https://journals.squ.edu.om/index.php/squmj/article/view/1324.