Stock, C., Keutgen, X. M., Pisapia, D., Crawford, C., & Zarnegar, R. (2011). Heterotopic Pancreatic Neoplasm Presenting as an Obstructing Mass at the Fourth Portion of the Duodenum. JOP. Journal of the Pancreas, 12(3), 241–243. https://doi.org/10.6092/1590-8577/3288