Arsia, A., Hazrah, P., Anwar, S., Thomas, S., Abbey, P., & Singh, S. (2021). Zollinger ellison syndrome due to primary nodal gastrinoma located outside the limits of the conventional gastrinoma triangle: report of a case. International Surgery Journal, 8(5), 1653–1657. https://doi.org/10.18203/2349-2902.isj20211852